Problems needing attention in the application of diammonium phosphate
1. Diammonium phosphate should not be mixed with alkaline fertilizer, otherwise it will cause nitrogen volatilization and reduce the fertilizer efficiency of phosphorus. 2. Crops that have applied diammonium superphosphate generally only supplement an appropriate amount of nitrogen fertilizer in the middle and later stages of growth, and no longer need to supplement phosphate fertilizer. 3. With the exception of legume crops, most crops need to apply nitrogen fertilizer and adjust the ratio of nitrogen to phosphorus.
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"prescribe the right medicine" to apply foliar fertilizer
The effect of applying phosphate fertilizer depends not only on the total amount of available phosphorus in the soil, but also on the soil properties, such as some soils can promote the dissolution of insoluble phosphate, while others can cause the immobilization of soluble phosphate. General phosphate fertilizer is applied to the soil, and the iron, calcium and aluminum in the soil soon.
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Introduction to the characteristics of organophosphorus insecticides
Organophosphorus insecticides are the most widely used and most widely used insecticides in China, with a wide variety of varieties and different properties, but generally speaking, they have the following characteristics: (1) the insecticidal spectrum is wide. At present, some commonly used varieties of organophosphorus insecticides can control a variety of agricultural and forestry pests, and some can be used to control sanitary pests.
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