The fertilization technique is simple and simple, and it is complicated and complicated. It is easy to get started with fertilization technology, but it is really difficult to do it. It is complicated because the conditions affecting the effects of fertilization and fertilization are too many, too complicated, and there is great variability and uncertainty. For example, even if the same crop is applied to the same crop at the same time and at the same place, thousands of trials will not yield the same yield results, not to mention the vastness of China's land, east, west, south, north, and middle climates. Soil conditions, crop types and production levels vary widely. According to statistics, there are at least 140 kinds of grain, vegetables, fruit trees and industrial raw material crops in China. The combination of these crops and different fertilization conditions is even more numerous. It is difficult to find a fertilization measurement formula that can be applied everywhere. To put it simply, it is because a large number of production and scientific research practices have proved that there is a certain biometric law between fertilization amount and yield, that is, between the fertilization amount and crop yield through a large number of scientific experiments and production practices for the same kind of crops. Relatively stable quantitative relationship, and put forward corresponding supporting technical specifications, this is the fertilization technology model. Based on this, combined with the specific local climate, soil conditions, crop fertilizer characteristics and target yield and major problems in production, further amendments to the fertilization proposals of the technical model can make the quantification more accurate and more effective. Targeted fertilization recommendations. This is like people's different tastes, tastes vary widely, it is difficult to develop the best recipe for everyone, but from the diet of most people we can know, in general, each person needs to eat three meals a day, You need to eat one or two hoes for a meal.
Based on the above concepts, the authors summarized the fertilization proposals for major crops in China (including NPK application rate, fertilization period and fertilization ratio) into a table, which was published in the November 11, 2011 issue of the Japanese newspaper. The proposal is based on a large number of field fertilizer test results, expert knowledge and production experience, and is appropriately revised according to the characteristics and needs of agrochemical services. The vast agrochemical service personnel and farmers' friends can use this form as a reference for the preparation of fertilizer and fertilization. I hope that everyone will use this as a starting point for further study, and use the local fertilization conditions and practical production flexibility. If conditions permit, better fertilization effects can be obtained by means of soil testing and formulating techniques and the help of relevant experts.
(Senior Consultant of Sinochem Corporation, Professor of China Agricultural University Wang Xingren)
Based on the above concepts, the authors summarized the fertilization proposals for major crops in China (including NPK application rate, fertilization period and fertilization ratio) into a table, which was published in the November 11, 2011 issue of the Japanese newspaper. The proposal is based on a large number of field fertilizer test results, expert knowledge and production experience, and is appropriately revised according to the characteristics and needs of agrochemical services. The vast agrochemical service personnel and farmers' friends can use this form as a reference for the preparation of fertilizer and fertilization. I hope that everyone will use this as a starting point for further study, and use the local fertilization conditions and practical production flexibility. If conditions permit, better fertilization effects can be obtained by means of soil testing and formulating techniques and the help of relevant experts.
(Senior Consultant of Sinochem Corporation, Professor of China Agricultural University Wang Xingren)
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