Four Mistakes in Maize Topdressing and Watering
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If there is fertilizer, it will be chased. If there is water, it will be poured into the seedling stage before the jointing of the corn. If it is not based on the actual conditions of drought, lyrical conditions, and the strength of the seedlings, timely and appropriate amount of topdressing and watering will often result in the aboveground part of the corn. The seedlings are long, and the roots of the underground are difficult to sag, causing the corn to lose the opportunity to exercise the seedlings, thereby laying a hidden danger on the corn plants. Topdressing and watering during the corn filling period not only increases the investment in corn production, but also wastes the fertilizer. At the same time, it also causes the corn to be late and mature, and even suffers from adverse effects such as frost.
Diazo, phosphorus and potassium, in the process of growth and development of micro-fertilizer corn, not only need a large amount of fertilizer such as nitrogen, phosphorus and potassium, but also micro-fertilizers such as trace elements. In the process of growth and development of corn, although the demand is small, it is not trivial. In terms of zinc fertilizer, some experiments have shown that the appropriate amount of zinc fertilizer is applied to the corn, and the number of grains per ear is increased by 50-80 grains compared with the control, and the 1000-grain weight is increased by 15 ~30 grams, generally increase the yield of corn by 8% to 15% per mu.
After heading without corning after heading, most of the plots are insufficiently applied due to insufficient base fertilizer or low quality of base fertilizer, and the fertilizer efficiency is basically exhausted. The nutrients in the soil can not meet the needs of late growth and development of corn. In order to obtain high quality and high yield of corn, it is necessary to obtain high quality and high yield of corn. Some quick-acting nitrogen fertilizers should be applied to prevent premature aging of corn, promote corn filling and grain fullness, and increase 1000-grain weight. This time, "graining fertilizer" can not only be saved, but it must be applied early, applied at a point, and applied in moderation. It is necessary to completely change the old practice of "the link between the autumn and the autumn, and the leisurely travel". After the fall, don't be idle, be shallow, diligent, remove the grass, and lay the foundation and guarantee for the "leisure" production next year.
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