Avoid sensitive periods for sensitive crops. The sensitivity and tolerance of chlorine to different crops and varieties vary widely. Chlorine-sensitive crops include tobacco, tea, citrus, grapes, watermelon, potato, and milk vetch, etc., and the application of chlorinated fertilizer is generally not applied or strictly controlled on these crops. There are also differences in the chlorine resistance of different varieties of the same crop. For example, among rice varieties, hybrid rice has the strongest chlorine tolerance, and conventional early rice has weak chlorine tolerance. In addition, chlorine-sensitive periods of crops should be avoided when applying chlorinated fertilizers. The chlorine sensitive period of the crop is mostly in the seedling stage, such as rice in the 3-5 leaf stage; wheat in the 2-5 leaf stage; Chinese cabbage, Chinese cabbage and rape in the 4-6 leaf stage.
Pay attention to the application method. When applying base fertilizer, it should be applied early and covered with soil. It should be applied one week before sowing or transplanting. It should be applied to the lower side of seeds or seedlings, 5-7 cm away from the topsoil. And 5-10 cm away from the crop plants, should not be applied. When the application amount is large, it can be applied in 2-3 times. The application can also be carried out with water or with dilute urine.
Try to apply in seasons and areas with high rainfall. It is best not to use or use less chlorinated fertilizer in areas without irrigation, poor drainage and high temperature and dry seasons, as well as in areas with water and rain.
Pay attention to the application method. When applying base fertilizer, it should be applied early and covered with soil. It should be applied one week before sowing or transplanting. It should be applied to the lower side of seeds or seedlings, 5-7 cm away from the topsoil. And 5-10 cm away from the crop plants, should not be applied. When the application amount is large, it can be applied in 2-3 times. The application can also be carried out with water or with dilute urine.
Try to apply in seasons and areas with high rainfall. It is best not to use or use less chlorinated fertilizer in areas without irrigation, poor drainage and high temperature and dry seasons, as well as in areas with water and rain.
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