At present, wheat has already reached the harvesting stage and even started the sowing of summer maize. Many farmers have misunderstandings in the way of summer corn fertilization, especially the "one bombardment" fertilization method has caused many losses to farmers. In response to questions such as how to fertilize summer maize, we invited the director of the Soil and Fertilizer Institute of Shandong Academy of Agricultural Sciences to Director Cui Rongzong to give us detailed answers.
One-time fertilization has become a fertilizer habit for farmers in many parts of the province
Cui Rongzong introduced that the technical content of one-time corn fertilization is high and there are several points that farmers need to pay attention to. First of all, in the selection of fertilizer must use large brands of good quality fertilizer is best to use slow-release fertilizer or stability fertilizer.
Cui Rongzong introduced that controlled-release fertilizers also contain some quick-acting components. Phosphorus, potassium, and some nitrogen are fast-acting. Only part of the nitrogen is present in the form of nitrate nitrogen as a slow-acting nitrogen fertilizer. Both of these fertilizers are very helpful for the growth of corn and can well meet the nutrient requirements of fertilizers at various growth stages.
In addition to the use of good fertilizer, we must pay attention to the spacing of corn fertilization due to a large amount of one-time fertilization if the distance from the fertilization can not easily determine the phenomenon of burning corn root. There is a lack of fertility at the end of one-time fertilization. If the summer weather is relatively dry or if you encounter plague-damaging corn, it is very easy to cause defertilization.
Cui Rongzong said that the two problems mentioned above rarely lead to the above problems and that the two fertilized corns are prone to high yields. For the farmers, the technical content of the two fertilization is relatively low. The first fertilization can be simulcast with the corn seed fertilizer and the 15-15-15 compound fertilizer with 30-40 pounds of ridges per acre can be applied.
During the period of corn big bell, 30-40 pounds of urea can be used for each additional two-pound fertiliser. “Now some peasant friends still have some erroneous fertilization philosophies, thinking that the more fertilizers are applied, the better the crops will be.†Cui Rongzong said that excessive fertilization may not only result in pollution and waste but will have the opposite effect. Later maize will be prone to lodging or late maturing. .
The biggest benefit of the two fertilization is the higher utilization of fertilizer. Maize generally has a small demand for fertilizers at the seedling stage and waits until the demand for fertilizers begins to increase.
Rainfall has probably increased in most parts of the province since late this year. Cui Rongzong said that early corn growth can be slightly arid. Drought will stimulate the roots of maize to look for water to make the roots of the corn more strong. The strong roots will lay the foundation for the growth of corn in the later period. On the one hand, it will enhance the drought resistance of corn. On the other hand, it will enhance the ability of roots to absorb nutrients and strengthen the lodging resistance at the later stage.
"We must properly grasp the degree of drought in general to fight at noon in the morning and in the evening when the corn leaves stretch. If the leaves in the morning and evening stretch is difficult to water in a timely manner." Cui Rongzong said.
In addition, the degree of drought can also be controlled through a deep soil environment. Dig 20 centimeters of shovel to observe the soil's dryness and wetness. If the soil below 20 cm can't be formed into a group, we must add water in time to prevent excessive drought from affecting the growth of corn.
Expert business card
Cui Rongzong: Now he is director of the Agricultural Precision Technology Research Office of the Soil and Fertilizer Institute of Shandong Academy of Agricultural Sciences. He is also the director and deputy secretary-general of Shandong Soil Society.
He graduated from the Soil Chemistry Department of Beijing Agricultural University in 1984 with a bachelor's degree in agriculture. It is mainly engaged in the research on the precise management of plant nutrients and fertilizing farmland nutrients and the development of new fertilizers. Since he took part in the work, he has hosted and participated in more than 10 national, provincial, and international cooperation research projects, including 1 national 948 project, 1 Ministry of Science and Technology Achievement Transformation Funding, 1 Shandong Provincial Science and Technology Research Project, and International Cooperation Project. 1 item etc.
He has won the second prize of national scientific and technological progress, two second prizes of scientific and technological progress in Shandong Province, and two third prizes of scientific and technological progress in Shandong, and one national invention patent. Has published 25 academic papers; participated in the preparation of "Chinese Fertilizer Practical Handbook", "New Technology for Fertilizer Application" and "Natural Science Wizard Series".
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