First, vegetables 1, fertilization principles: based on organic fertilizer, supplemented by other fertilizers; mainly multi-component fertilizer, supplemented by single-unit fertilizer;
Mainly based on Shiji fertilizer, supplemented by topdressing.
2, base fertilizer: base fertilizer refers to the fertilizer applied to the field before planting or before planting. The base fertilizer should be based on organic fertilizer, mixed with appropriate amount of fertilizer. In the establishment of the variety and quantity of base fertilizers, we must pay attention to the following points: 1 obstacles to prevent fertilizer concentration; 2 use of nitrate nitrogen in base fertilizers, and use less ammonia nitrogen; 3 nitrogen-based fertilizers, 70% of crop nitrogen supply As base fertilizer, 30% for topdressing; 4 phosphate fertilizer should be used as base fertilizer. The absorption of phosphorus by vegetables, when nitrogen is 100, the phosphorus is 24-30; the potassium fertilizer of 5 base fertilizers should not be too much. Under normal circumstances, the potassium fertilizer application amount is 0.8-1.4 times of the absorption of vegetable crops.
3, top dressing: top dressing refers to the fertilizer added after the vegetable is planted or after planting. Topdressing should be based on different vegetables and different growth stages, and timely and appropriate amount of topdressing to meet the needs of each growth period of vegetables.
The focus of various vegetable topdressing is: 1 vegetable, the focus of topdressing is on the root or stem expansion period. 2 Chinese cabbage, cabbage, and color-changing green leafy vegetables, the focus of topdressing is in the early stage of the ball or in the early stage of the flower ball (cauliflower). 3 melons, solanaceous fruits, beans, topdressing focus on the first female flower results (pods).
4. Top dressing: refers to the method of spraying fertilizer solution or fertilizer powder on the vegetable leaf surface to make the vegetables absorb the nutrients through the leaves. The top dressing is suitable for fertilizers that are easily fixed and leached by the soil and when the soil is wet for a long time in the spring. The concentration of the fertilizer solution for top dressing varies depending on the crop and the external conditions, and is generally between a few thousandths and one hundredth.
2. Fertilization of various vegetables 1 Melon: Apply enough base fertilizer to ensure that the mature organic fertilizer is 4000-5000 kg/mu, diammonium phosphate 30-40 kg/mu, potassium sulfate 40-60 kg/mu or three-element compound fertilizer 100 kg / mu. Reasonable topdressing, each mu can be used to topdress 1000 kg of faecal manure or 10 kg of ternary compound fertilizer (or urea). At the same time, 0.4% urea plus 0.3-0.4% potassium phosphate can be used to supplement the foliar topdressing 2-3 times. The protected area can supplement the CO2 gas fertilizer. It is forbidden to apply harmful urban garbage and sludge, and it is not allowed to use manure fertilizer for top dressing during the harvesting stage.
2 Solanaceous vegetables: mainly organic fertilizer, apply enough base fertilizer to ensure the application of fully decomposed organic fertilizer 4000-5000 kg/mu, and use diammonium phosphate 30-40 kg/mu, potassium sulfate 40-60 kg/ Mu or three-element compound fertilizer 100 kg / mu. Reasonable topdressing can be applied to 1000 kg of manure and 10 kg of urea per mu. It is forbidden to apply harmful urban garbage and sludge, and it is not allowed to use manure water as top dressing during the harvesting stage.
3 leafy vegetables: apply enough base fertilizer to ensure that the cooked organic fertilizer is 4000-5000 kg/mu, diammonium phosphate 30-40 kg/mu, potassium sulfate 30-40 kg or three-element compound fertilizer 80 kg/mu. Reasonable topdressing: Applying slow-acting fertilizer in the early and middle stages, it can be applied to fully decomposed human excrement 1000 kg/mu, grass ash 40-100 kg/mu, three-element compound fertilizer (or urea) 10 kg/mu; Apply quick-acting ammonium bicarbonate 20-30 kg/mu or urea 10 kg/mu. It is forbidden to apply harmful urban garbage and sludge, and it is not allowed to use manure water as top dressing during the harvesting stage.
Third, the boron room vegetables 1, fertilization principle: according to the vegetable yield and soil nutrient status to determine the amount of fertilizer, according to the nutritional characteristics of vegetables to determine the fertilization period. Organic fertilizer and phosphate fertilizer are applied as base fertilizer before vegetable sowing and planting. The number of top dressings can be determined according to the length of growth period of vegetables. Vegetables with short growth period can be topdressed 1-2 times in the middle growth stage. Vegetables with long growth period can be topdressed 3-4 times during the period when nutrients need more, generally 14-20 days. Topdressing 1-2 times. According to different vegetables and different fertilizers to determine the fertilization method, phosphate fertilizer is easy to be fixed by the soil, should be used intensively, strip application or acupoint application. Nitrogen and potassium fertilizers are generally applied to the ditching strips and points, and can be applied with water or foliar spray at the late growth stage.
2. Applicable methods: 1 Add organic fertilizer. The application of organic fertilizer with high cellulose content (ie high carbon to nitrogen ratio) can greatly enhance the soil nutrient buffering capacity, prevent salt accumulation and delay the soil salinization process; 2 deepen the soil tillage layer. Since the salt of the soil in the protected area accumulates into a superficial type, after the vegetables are harvested, deep-turning is carried out, and the topsoil rich in salt is turned to the lower layer, and the lower layer of soil with less salt is turned over, which can be greatly reduced. Salt damage; 3 withdrawal of membrane water to wash salt. Use the change of the gap, wash the salt with salt or water to wash the salt. After the summer vegetables are harvested, the film is removed. If there are dozens of days in the rainy season, the sun and rain will be effective in eliminating soil obstacles. Or in the hot season, large water flooding, the ground cover mold to raise the water temperature, so that not only can wash the salt, but also can extinguish the bacteria, which is conducive to the high yield and stability of vegetables; 4 base fertilizer deep application, top dressing limited. When using chemical fertilizer as the base fertilizer, it should be “small times†when topdressing. It is best to mix fertilizer and organic fertilizer on the ground and then plow. Topdressing is generally difficult to deepen, so it is necessary to strictly control the amount of fertilizer applied each time, rather than increase the number of top dressings to meet the nutrient requirements of vegetables, not too much application at one time, resulting in an increase in the concentration of soil solution; 5 promote root dressing. Plants rely mainly on roots to absorb nutrients, while leaves and stems can also absorb nutrients directly from solutions sprayed on the surface. In the cultivation of protected areas, since the top dressing does not add "trouble" to the soil, it should be strongly advocated. Urea, superphosphate and potassium dihydrogen phosphate, as well as some trace elements, are suitable as top dressings.
Mainly based on Shiji fertilizer, supplemented by topdressing.
2, base fertilizer: base fertilizer refers to the fertilizer applied to the field before planting or before planting. The base fertilizer should be based on organic fertilizer, mixed with appropriate amount of fertilizer. In the establishment of the variety and quantity of base fertilizers, we must pay attention to the following points: 1 obstacles to prevent fertilizer concentration; 2 use of nitrate nitrogen in base fertilizers, and use less ammonia nitrogen; 3 nitrogen-based fertilizers, 70% of crop nitrogen supply As base fertilizer, 30% for topdressing; 4 phosphate fertilizer should be used as base fertilizer. The absorption of phosphorus by vegetables, when nitrogen is 100, the phosphorus is 24-30; the potassium fertilizer of 5 base fertilizers should not be too much. Under normal circumstances, the potassium fertilizer application amount is 0.8-1.4 times of the absorption of vegetable crops.
3, top dressing: top dressing refers to the fertilizer added after the vegetable is planted or after planting. Topdressing should be based on different vegetables and different growth stages, and timely and appropriate amount of topdressing to meet the needs of each growth period of vegetables.
The focus of various vegetable topdressing is: 1 vegetable, the focus of topdressing is on the root or stem expansion period. 2 Chinese cabbage, cabbage, and color-changing green leafy vegetables, the focus of topdressing is in the early stage of the ball or in the early stage of the flower ball (cauliflower). 3 melons, solanaceous fruits, beans, topdressing focus on the first female flower results (pods).
4. Top dressing: refers to the method of spraying fertilizer solution or fertilizer powder on the vegetable leaf surface to make the vegetables absorb the nutrients through the leaves. The top dressing is suitable for fertilizers that are easily fixed and leached by the soil and when the soil is wet for a long time in the spring. The concentration of the fertilizer solution for top dressing varies depending on the crop and the external conditions, and is generally between a few thousandths and one hundredth.
2. Fertilization of various vegetables 1 Melon: Apply enough base fertilizer to ensure that the mature organic fertilizer is 4000-5000 kg/mu, diammonium phosphate 30-40 kg/mu, potassium sulfate 40-60 kg/mu or three-element compound fertilizer 100 kg / mu. Reasonable topdressing, each mu can be used to topdress 1000 kg of faecal manure or 10 kg of ternary compound fertilizer (or urea). At the same time, 0.4% urea plus 0.3-0.4% potassium phosphate can be used to supplement the foliar topdressing 2-3 times. The protected area can supplement the CO2 gas fertilizer. It is forbidden to apply harmful urban garbage and sludge, and it is not allowed to use manure fertilizer for top dressing during the harvesting stage.
2 Solanaceous vegetables: mainly organic fertilizer, apply enough base fertilizer to ensure the application of fully decomposed organic fertilizer 4000-5000 kg/mu, and use diammonium phosphate 30-40 kg/mu, potassium sulfate 40-60 kg/ Mu or three-element compound fertilizer 100 kg / mu. Reasonable topdressing can be applied to 1000 kg of manure and 10 kg of urea per mu. It is forbidden to apply harmful urban garbage and sludge, and it is not allowed to use manure water as top dressing during the harvesting stage.
3 leafy vegetables: apply enough base fertilizer to ensure that the cooked organic fertilizer is 4000-5000 kg/mu, diammonium phosphate 30-40 kg/mu, potassium sulfate 30-40 kg or three-element compound fertilizer 80 kg/mu. Reasonable topdressing: Applying slow-acting fertilizer in the early and middle stages, it can be applied to fully decomposed human excrement 1000 kg/mu, grass ash 40-100 kg/mu, three-element compound fertilizer (or urea) 10 kg/mu; Apply quick-acting ammonium bicarbonate 20-30 kg/mu or urea 10 kg/mu. It is forbidden to apply harmful urban garbage and sludge, and it is not allowed to use manure water as top dressing during the harvesting stage.
Third, the boron room vegetables 1, fertilization principle: according to the vegetable yield and soil nutrient status to determine the amount of fertilizer, according to the nutritional characteristics of vegetables to determine the fertilization period. Organic fertilizer and phosphate fertilizer are applied as base fertilizer before vegetable sowing and planting. The number of top dressings can be determined according to the length of growth period of vegetables. Vegetables with short growth period can be topdressed 1-2 times in the middle growth stage. Vegetables with long growth period can be topdressed 3-4 times during the period when nutrients need more, generally 14-20 days. Topdressing 1-2 times. According to different vegetables and different fertilizers to determine the fertilization method, phosphate fertilizer is easy to be fixed by the soil, should be used intensively, strip application or acupoint application. Nitrogen and potassium fertilizers are generally applied to the ditching strips and points, and can be applied with water or foliar spray at the late growth stage.
2. Applicable methods: 1 Add organic fertilizer. The application of organic fertilizer with high cellulose content (ie high carbon to nitrogen ratio) can greatly enhance the soil nutrient buffering capacity, prevent salt accumulation and delay the soil salinization process; 2 deepen the soil tillage layer. Since the salt of the soil in the protected area accumulates into a superficial type, after the vegetables are harvested, deep-turning is carried out, and the topsoil rich in salt is turned to the lower layer, and the lower layer of soil with less salt is turned over, which can be greatly reduced. Salt damage; 3 withdrawal of membrane water to wash salt. Use the change of the gap, wash the salt with salt or water to wash the salt. After the summer vegetables are harvested, the film is removed. If there are dozens of days in the rainy season, the sun and rain will be effective in eliminating soil obstacles. Or in the hot season, large water flooding, the ground cover mold to raise the water temperature, so that not only can wash the salt, but also can extinguish the bacteria, which is conducive to the high yield and stability of vegetables; 4 base fertilizer deep application, top dressing limited. When using chemical fertilizer as the base fertilizer, it should be “small times†when topdressing. It is best to mix fertilizer and organic fertilizer on the ground and then plow. Topdressing is generally difficult to deepen, so it is necessary to strictly control the amount of fertilizer applied each time, rather than increase the number of top dressings to meet the nutrient requirements of vegetables, not too much application at one time, resulting in an increase in the concentration of soil solution; 5 promote root dressing. Plants rely mainly on roots to absorb nutrients, while leaves and stems can also absorb nutrients directly from solutions sprayed on the surface. In the cultivation of protected areas, since the top dressing does not add "trouble" to the soil, it should be strongly advocated. Urea, superphosphate and potassium dihydrogen phosphate, as well as some trace elements, are suitable as top dressings.
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】
Uv Marble Sheet,Pvc Uv Plastic Sheet Wall Panel,Marble Background Uv Sheet,Marble Palstic Wall Decorative Materials
Shandong Zeen Decoration Materia.Co., Ltd. , https://www.zeendecor.com