Intelligent Control Butterfly Valve Zhejiang Heshuo Technology Co., Ltd , https://www.hosuocn.com
Low fertility plots have low soil fertility, low base fertilizer, small population, and thin seedling growth. The yield per acre is 250-300 kg. In order to promote vegetative growth as soon as possible, it can be applied early or after jointing. It is better to raise the seedling fertilizer, and the amount of topdressing is 50% to 55% of the total nitrogen application amount. Experiments and production practices have shown that the plots with lower soil fertility and appropriate increase in seedling stage can not only promote balanced seedling growth, improve plant height and uniformity, but also meet corn seedling stage. The need for rapid growth and development.
The soil fertility of the medium fertility plot is better, the seedling grows robustly, the leaves are thick green, and the yield per mu is 350-450 kg. In order to prevent excessive growth of nutrients, the topdressing fertilizer should not be too much in this period, and the seedling fertilizer generally accounts for the total nitrogen chase. The application of 30% to 35% is appropriate, and the concentrated fertility is reserved for the application of panicle fertilizer in the big bell period, which can meet the needs of the sharp increase of corn vegetative growth and the continuous differentiation of the male and female ears.
The high-fertility plot has high soil fertility, high-yield foot, large population, strong seedling growth, and high-yield plots with a yield of 650-750 kg or more. In order to avoid the growth of the seedlings and ensure the stable growth of the corn, the fertilizer can be controlled in the total nitrogen recovery. 20% to 25% of the application is good, and the remaining fertilizer is reserved for attacking and granulating, which is beneficial to promoting the ear, increasing the grain weight and high yield.
When topdressing, water should be treated flexibly according to soil moisture. To achieve the combination of fertilizer and water, to promote fertilizer with water, give full play to the effect of fertilizer production.
How to apply wheat seedlings to summer wheat
Summer maize intercropped in wheat field, due to lack of fertilization during interplanting, or infestation due to inconvenient operation, combined with seedlings and wheat symbiosis, seedlings are in the line, lack of light, soil compaction, poor ecological conditions, mostly weak yellow seedlings . In order to promote the rejuvenation of seedlings, it will form a production capacity as soon as possible, and build a skeleton for high yield. Therefore, after the corn seedlings are planted, the seedlings vary according to the seedlings, and it is extremely important to scientifically apply the seedling fertilizer to promote the early emergence of seedlings and to cultivate strong seedlings.
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