When to apply "shoot dressing fertilizer" if the corn seeds are full?

Corn is a kind of high stalk food crop, which needs a lot of fertilizer during the whole growth and development period. Scientific fertilization is the key to high yield. As the saying goes, "a crop is good at one thing, and it all depends on fertilizer." This fully shows the importance of fertilizer to improve crop yield. The following questions are answered as follows.

If you want to plant corn with high yield, you'd better fertilize it four times. (1) Base fertilizer (2) After the emergence of corn, when you just get up to dial the joint (small horn mouth) and intertillage to weed, you should squat the seedlings and topdressing in time. At this time, corn seedlings began to grow, and the growth of stems accelerated, and the demand for fertilizers gradually increased. However, the ability of seedling taproots to absorb nutrients is still very weak, and the applied base fertilizer is not easy to absorb. Therefore, this period should be moderately topdressing, generally topdressing 650 per mu.

(3) The fertilization of big horn fertilizer at this stage is the key to increase corn yield. Corn grows rapidly from node position to heart leaf stage of 10- 12, when the leaves are big trumpet-shaped. Most farmers have realized that in the silent night, they will hear the dry growth of corn plants in the corn field. At the big bell mouth stage, due to the fast growth speed and high temperature, (4) In the late growth stage of maize plants sprayed with fertilizer at booting stage and before heading, the trunk growth slowed down, the head tightened, the buds in the middle node began to germinate, and the fertilizer requirement reached the peak, so the nutrients accumulated by seedlings could not meet the demand, so topdressing was needed. At this stage, because the root system no longer expands, the ability to absorb fertilizer is weakened, which is suitable for foliar spraying and fertilization. Generally, potassium dihydrogen phosphate, corn treasure, corn treasure and other quick-acting fertilizers are used.

To sum up, in order to achieve high yield of corn, how many times of fertilization depends on the type of seed fertilizer, and there is a great difference between controlled release fertilizer and common compound fertilizer. Through the above analysis, we can fully understand the fertilization situation. Please correct your inappropriate words.