Increase effective fertility
To plant fruit trees, for example, one of the bottlenecks limiting the development of fruit production is a serious lack of investment, of which the lack of soil fertility inputs is the most prominent aspect. Some fruit farmers say that he has a lot of fertilizer every year to nitrogen, phosphorus and potassium content of sufficient compound fertilizer, but why is it still difficult to high yield, high quality orchards?
In fact, these farmers are not aware of the importance of effective fertility. Putting in more is not the same as utilizing more.
Fertility that can be utilized by fruit trees in that year can only be converted into economic benefits in that year.
Take, for example, the physiological diseases of the orchard. Yellow leaf disease occurs in fruit trees when there is an iron deficiency, and small leaf disease occurs in fruit trees when there is a zinc deficiency. But yellow leaf disease, small leaf disease is not the whole garden or the whole tree occurs, often in a large branch on a very obvious performance.
Is it possible that on the same piece of land, only the root system corresponding to the branch with the disease is deficient in soil?
In fact, it is the insufficient supply of effective fertilizer that causes the local deficiency.
To improve the effective fertility, we must consider the utilization rate of fertilizer. As far as the three major elements are concerned, the current utilization rate is quite low. The more consistent view is that the utilization rate of nitrogen fertilizer is 30% to 35%, phosphorus fertilizer is 10% to 15%, and potassium fertilizer is 40% to 45%. And in these elements there are also mutual antagonism between the role of phosphorus fertilizer application is too large, will inhibit the absorption and utilization of nitrogen fertilizer.
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