“One-time fertilization has become a habit of fertilizer for farmers in many parts of the country.†Professor Xue Jiquan, a chief expert of corn in Shaanxi Province and a doctoral tutor at Northwest A&F University, said that the technical content of corn single-use fertilization is high, and there are several points that need farmers' attention.
First of all, in the selection of fertilizers, it is necessary to use large brands of good quality fertilizers, preferably slow release fertilizers, or stable fertilizers. Xue Jiquan introduced that controlled release fertilizer also contains some quick-acting ingredients. Phosphorus, potassium and a part of nitrogen are quick-acting. Only a part of nitrogen is in the form of nitrate nitrogen, which is a slow-acting nitrogen fertilizer. These two fertilizers are very helpful for the growth of corn and can well meet the nutritional needs of fertilizers in all growing seasons.
In addition to the selection of good fertilizer, but also pay attention to the spacing of corn fertilization, due to the large amount of one-time fertilization, if the distance of fertilization is not accurate, it is easy to cause corn root burning phenomenon. There is also a lack of fertility in the late stage of fertilization. If the summer weather is relatively dry or encounters a disaster, corn is very likely to cause de-fertilization.
Xue Jiquan said that the above problems are rarely caused by two fertilizations, and that the two fertilized corns are prone to high yields. For the farmers, the technical content of the two fertilizations is low. The first fertilization can be carried out with the corn seed fertilizer, and the 15-15-15 compound fertilizer of 30-40 kg of the ridge can be applied per mu.
In the period of corn big bell, 30~40 kg of urea is applied per mu, and the amount of fertilizer applied twice is about 80 kg. "Now some farmers' friends still have some wrong fertilization concepts. They think that the more fertilizers are pursued, the better they are, and the fear that the crops are not enough to eat." Xue Jiquan said that excessive fertilization may not only cause pollution and waste, but will have the opposite effect. Late corn is easy to fall or late.
The biggest benefit of two fertilizations is the higher utilization of fertilizer. Corn generally requires a small amount of fertilizer at the seedling stage, and the demand for fertilizer begins to increase after the tipping.
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