Spraying micro-fertilizer on vegetables and putting "six off"

The concentration is suitable to receive good results, and the application concentration is too high, which is not only useless, but harmful. Generally speaking, the suitable spraying concentration of various micro-fertilizers is: boric acid or borax solution 0.05% to 0.2%, ammonium molybdate solution 0.02% to 0.05%, zinc sulfate solution 0.05% to 0.2%, copper sulfate solution 0.01%~ 0.02%, iron sulfate solution 0.2% to 1%.


It is suitable to spray 40-75 kilograms of fertilized liquid on one acre of land to make the stems and leaves of vegetables wet.

The number of times of foliar application is generally less than the amount of fertilizer used, so it is difficult to meet the needs of all growth and development processes at one time. Therefore, it is generally appropriate to spray 2 to 4 times according to the length of the vegetable growth period.

The time is to reduce the loss of micro-fertilizer during the spraying process, which is beneficial to the absorption of the leaves. It should be sprayed on the cloudy or sunny afternoon to the evening, which can prolong the residence time of the fertilizer solution on the vegetable leaves, which is beneficial to increase the spray. Apply the effect.

The period of spraying the foliar fertilizer must be determined according to different vegetable varieties and different types of micro-fertilizers, and it is generally appropriate to spray before flowering.

Mixed spraying between micro-fertilizers and mixed with other fertilizers and pesticides can save the process and play the role of “one spray and multiple effects”. However, when mixing, pay attention to clearing the fatness and medicinal properties. If the properties are opposite, they are mutually obstructive and must not be mixed. All kinds of micro-fertilizers should not be mixed with alkaline fertilizers such as grass ash and lime. Zinc fertilizer should not be mixed with superphosphate. Copper fertilizer should not be mixed with potassium dihydrogen phosphate solution.

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