Foliar fertilizer has skill

The main role of foliar fertilization is to compensate for soil fertilization, prevent premature senescence, and promote crop nutrient balance. Proper use of foliar fertilizer can increase crop yield, improve crop quality and enhance crop stress tolerance. In order to improve the use of foliar fertilizer, the following points should be noted when using .

First, we must choose good quality foliar fertilizer

When purchasing foliar fertilizer, pay attention to the trademark, enterprise standard number, product quality certificate, agricultural use registration certificate, factory name, factory address, production date, packaging, whether the packaging is intact, liquid fertilizer should pay attention to the solubility. With or without precipitation.

Second, to be targeted

It is generally believed that in the case of insufficient base fertilizer, foliar fertilizer mainly based on nitrogen and phosphorus fertilizer can be selected; when sufficient application of base fertilizer is applied, foliar fertilizer mainly based on trace elements should be selected, and growth can also be selected according to different needs of crops. Adjust the foliar fertilizer of the substance. The cotton bud of Boron can be prevented falling off the bell bud, increasing the fiber length and content of the lint; rice, corn Shi

Zinc can prevent rice seedlings stiff, white corn seedling disease; South acid soil planted peanuts, soybeans spraying molybdenum-containing fertilizer can be improved oil content and protein content; application brassins vegetables can advance mature market, decrease cellulose Content, improve mouthfeel and increase sugar content.

Third, the spray concentration should be appropriate

Spraying foliar fertilizer must strictly control the spray concentration, especially for foliar fertilizers containing growth regulating substances. If the concentration is 0 . 5 to 1 microgram of triacontanol can promote seed germination, but concentration above 1 microgram will inhibit seed germination. Therefore, it is necessary to carry out the spraying in strict accordance with the concentration required by the instructions for use of various foliar fertilizers.

Fourth, choose the best spraying time and location

In order to facilitate the absorption of plant nutrients, spray applied at the time the election is not the best wind in the early morning or evening. In case of heavy rain after spraying foliar fertilizer, spray it again. If sprayed in a small area, it can be sprayed on the back of the leaf because the back of the leaf absorbs nutrients faster than the leaf surface.