2018年5月8日星期二

Emergency: fertilizer is wasted!It's all... wrong.

As we all know, fertilizer is the synthesis of three kinds of fertilizer.China has been using chemical fertilizer for nearly 40 years, and it is undeniable that chemical fertilizers have made great contribution to our grain production.But there is no denying the fact that the more fertilizer we use today, the more we produce, but we don't see any growth. Why is that?
Let's start with the effects of three elements: fertilizer and nitrogen and potassium.
Nitrogen, phosphorus and potassium are the three most important elements needed for plant growth. It is necessary to supplement the nutrient by means of fertilization.But after applying a lot of fertilizer, the crop still can't grow well. What's the matter?
The effect of nitrogen on nitrogen.
Nitrogen is an important part of chlorophyll and is the main component of protein and enzyme in crops.It can promote the healthy and thick color of leaves, enhance the photosynthesis of crops, improve the yield of crops, and improve the quality of crops.
The role of phosphorus.
Phosphorus is an indispensable element in the formation of nuclear protein and lecithin.It can accelerate cell division, accelerate the growth of root and ground, promote flower bud differentiation, mature early and improve fruit quality.
The role of potassium.
Potassium can increase the intensity of photosynthesis, promote the formation of starch and sugar in crops, enhance the resistance and disease resistance of crops, and increase the uptake and utilization of nitrogen in crops.
Although the three elements of NPK have an important effect on the growth of crops, the demand for NPK is limited and cannot be overdone.
China science network reported that our country crops per acre of fertilizer 21.9 kg, far higher than the world average (8 kg per acre), is 2.6 times that of the United States, the European Union's 2.5 times, problems such as excessive fertilizer application, blind application, resulting in increased cost and environmental pollution.
There are few people in our country, so the pursuit of production has always been the highest goal of our agricultural production.Since the advent of fertilizers and pesticides, when crops are not growing well, fertilizer is added to the field, whether or not it is fertilized.When crops are found, they are sprayed with pesticides, both high and low.
In the long run, whether fertilizer or pesticide formed a vicious circle, which is a large amount of fertilizer caused soil harden and acidification, soil so unhealthy, soil is not due to ill health, cause plant is not healthy, not healthy and spraying pesticide plants;Pesticides to reduce or even kill a lot of soil microbes and bacteria, many biological processes in soil slows or stops, the falling capability of protecting fertilizer, fertilizer of soil, in order to improve the yield, farmers have to use more fertilizers, agricultural production in our country is in such a vicious cycle.

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