Applying good fertilizer to high yield

Reasonable fertilization is based on the corn fertilizer requirement, soil fertility, fertilizer type and natural conditions and cultivation measures at the time of fertilization, to determine the appropriate fertilization amount, nutrient distribution ratio, fertilization period and fertilization method, in order to maximize fertilizer utilization. . Corn high-yield fertilization technology is divided into base fertilizer, seed fertilizer, top dressing and root spray fertilizer.
Deep-based base fertilizer is a fertilizer applied before sowing, also known as base fertilizer. It should usually be based on high-quality organic fertilizer, supplemented by chemical fertilizer. Its important role is to fertilize soil fertility, loosen the soil, slowly release nutrients, and supply corn seedlings and later growth and development needs.
It is necessary to use seed fertilizer for seed germination and seedling growth, and to use quick-acting fertilizer. Because chemical fertilizers, especially nitrogen fertilizers, can cause rotten seeds, they should be applied separately from the seeds, with a depth of 8 to 10 cm.
Graded top dressing and seedling fertilizer: There is no plot to apply the seed fertilizer, combined with the second cultivating and topdressing, the amount of seedling fertilizer is equivalent, adding 20-30 kg of decomposed oil residue or sheep manure.
Supplementing the booting of fat corn to jointing is the most effective period of fertilization. This period is the peak of the spikelet differentiation, and the vegetative growth and reproductive growth are the key period to determine the size of the ear and the number of grains. It requires more nutrients and Moisture. It is advisable to use quick-acting nitrogen fertilizer in the booting fertilizer, the amount of which accounts for about 40% of the total nitrogen fertilizer, combined with the ditch and soil application, and the fertilizer effect can be quickly exerted after irrigation.
The application of flower-grained corn has completely entered the stage of reproductive growth. More than 90% of the dry matter production in the grain comes from the photosynthesis products of the leaves. At this time, keeping the leaves green and prolonging the leaf function period is an important measure to increase the grain weight and obtain high yield. Due to the high size of the corn plants during this period, it is impossible to carry out field mechanical operations. Using drip irrigation or self-pressing hose irrigation, 5-10 kg of drip irrigation special fertilizer or other quick-acting nitrogen fertilizer can be applied with water droplets. Or add a certain amount of high-efficiency coated urea when ditching and topdressing, control and delay the release rate of quick-acting nitrogen fertilizer, and prolong the fertilizer efficiency period.
Foliar spray fertilizer foliar spray fertilizer operation is relatively simple, nutrient elements run fast, fast onset, is a supplement to the root dressing, especially for the prevention and treatment of corn deficiency syndrome. The types of foliar fertilizer mainly include trace element foliar fertilizer, rare earth micro-fertilizer, organic compound foliar fertilizer and some biological regulators. It is generally used in combination with measures such as fight drugs.
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