Summer maize interplanted in wheat crops is due to low fertilization during intercropping, or inability to apply seed fertilizers due to interplanting operations, in addition to symbiotic seedlings and wheat, seedlings are in line, lack of light, soil compaction, poor ecological conditions, and most yellow seedlings . In order to promote the rejuvenation of seedlings, it will be able to form production capacity as soon as possible and build a skeleton for high yields. Therefore, after the corn is set to seedlings, it will be different depending on the seedlings. It will be very important to raise the seedlings scientifically and to raise seedlings early, and to cultivate strong seedlings.
Low-fertility plots have low soil fertility, low basal fertility, small populations, and thin seedling growth. Yields of 250-300 kilograms per acre are used to promote vegetative growth as soon as possible. Miao Fei, top dressing amount of total nitrogen recovery amount of 50% to 55% is better. Experiments and production practices have shown that, with low soil fertility, the amount of topdressing fertilizers can be appropriately increased at the seedling stage, which not only promotes balanced growth of seedlings, but also improves the uniformity of plant height at the seedling stage, and can also satisfy maize seedling stage. The need for rapid growth and development.
Medium fertility plots have better soil fertility, seedlings grow robustly, and leaves have a rich green color. The yield per mu is between 350 and 450 kg. To prevent overgrowth of nutrients, the top dressing should not be too much during this period. Appropriate amount of 30% ~ 35% is appropriate, while the concentrated fertility reserved for the large bell-mouth chase panicle fertilizer application, can meet the rapid growth of corn vegetative growth and the need for continuous differentiation of male and female ear.
High-fertility plots have high soil fertility, rich bases, large populations, robust seedling growth, and high-yield plots with 650-750 kg or more per acre yield. In order to avoid leggy crops and ensure a steady growth of maize, the Tiaomiao fertilizer can be controlled in total nitrogen recovery. The amount of 20% to 25% of the application amount is better, and the remaining fertilizer is reserved for tapping and attacking grains, which is conducive to promoting panicle enlargement, increasing grain weight, and seizing high yield.
Topdressing should be flexible depending on soil moisture watering. Combine fertilizer and water, promote fertilizer with water, and give full play to the role of fertilizer production.
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