The most critical role of applying organic fertilizer is to regulate the soil and fertilize the soil. It is a way to improve the physical, chemical and ecological properties of the soil from the mountain. It is similar to the “tonic†of the soil, which can make the soil fundamentally strong. Fertilizer is like a “symptomatic drugâ€. If there is no element in the soil, what kind of fertilizer is applied, it will work quickly. However, after applying fertilizer all the year round, you will find that today's soil lacks this one, and then it is the "symptomatic medicine" that is opened today. The "symptomatic medicine" is opened tomorrow, the effect is indeed remarkable, but the "illness" is coming. more. Some people say that I just open an "Imperial Dan" to the soil, and all the elements are not working. In fact, this is a major drawback of China's agriculture nowadays! It is this way for ordinary farmers to plant land. "I don't know what the soil is missing, I will give it to him." There are three disadvantages to doing this: 1. The chief culprit of environmental pollution. The groundwater nitrate content rises sharply and the water body is eutrophic. The agricultural pollution is more terrible than industrial pollution. Agricultural pollution is the super-large non-point source pollution that all farmland in the country is carrying out. Once the pollution cannot be treated! 2, fertilizer waste, not worth the candle. Excessive application of chemical fertilizer not only increases the investment cost of agriculture, but also tends to cause crops to grow long and mad, and the nutrition of fertilizers is supplied to crop straws, but it is not necessarily useful for fruits, and sometimes harmful. 3. The soil is "dead". Long-term, large amounts of fertilizer inputs lead to soil compaction, hardening, acidification, large amounts of soil microbes, a dramatic decline in cushioning performance, and a degree of collapse in the soil ecosystem. How can this soil yield? How can high-quality crops be produced? But organic fertilizer is exactly the opposite. In the absence of chemical fertilizers, farmers have been using farmland to grow land, the soil can be produced as well, the yield is not high but the quality is very good, and now we are constantly developing high-tech bioenergy organic fertilizer, but it has not been widely used. In fact, the key to the wonderful role of organic fertilizer is that at the beginning, improving the soil, regulating the soil, and enhancing the "physique" of the soil, the chances of getting sick are reduced a lot, so there is no need to busy "symptomatic drugs" every day. . Some people will ask, don't use chemical fertilizer at all, can't do it without "symptoms"? The answer is yes, no problem! Now organic foods and organic vegetables are so grown. Before the 1980s, when the fertilizer was not fully popularized, our food was also so produced! But the core question is whether it will reduce production without chemical fertilizer. This problem has been given persuasive data from the perspective of scientific research. . Professor Li Ji of China Agricultural University's long-term positioning test shows that as long as the crop can provide "sufficient" organic fertilizer, plus reasonable agricultural management measures, crop yield will not be reduced, and the quality is much better than the quality of fertilizer planting. However, the cost of planting organic fertilizer alone is high, which is also an important reason for the high price of organic food. As for the current situation in China, to feed more than one billion people, it is still necessary to pay equal attention to both production and quality. The most suitable fertilization method for the current agricultural production in China is the combination of organic and inorganic. If we pursue higher quality, we can also organic + inorganic + biological fertilizer. 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How to use organic fertilizer is best