Do you really understand new fertilizers?

The efficacy of new fertilizers is: directly or indirectly for the crop to provide essential nutrients, adjust soil pH, improve soil structure, improve soil physical and chemical properties and biological properties; regulate or improve the growth mechanism of crops; improve the quality and nature of fertilizers or improve the utilization rate of fertilizers. Recently, China Plant Nutrition and Fertilizer Society, Director of the New Fertilizer Committee Shen Bing on the new fertilizer R & D promotion of some of the important issues made the elaboration.

　　Slow and controlled release fertilizer

　　Slow-controlled release fertilizer is not all-encompassing, it is also subject to the application of the region, crops, seasons, application methods and other factors, in different regions, different crops, the effect of slow-controlled release of fertilizer varies greatly, fertilizer efficiency to a large extent by the application of technology to determine the high and low. At the same time, in the slow controlled release fertilizer manufacturing link there are still many urgent need to overcome the short board. For example, for organic coated slow controlled release fertilizer, as the coating of organic materials is expensive, but also bring secondary pollution; sulfur-coated slow controlled release fertilizer will exacerbate the degree of soil acidification, may not be suitable for acidic soils and vegetable gardens, in the paddy field will also bring hydrogen sulfide toxicity; and the use of inorganic wrapped slow controlled release fertilizers, ****** the problem is that it is difficult to control the effect to ensure. In addition, both sulfur-coated and inorganic wrapped type of slow-controlled release fertilizer, there are limitations on the nitrogen nutrient content, which is not conducive to the preparation of high-concentration blended fertilizer.

　　Stable fertilizer

　　Due to the variable soil environment, urease inhibitors have not shown stable yield increase effects in field trials. Foreign scholars, after synthesizing relevant data, concluded that in those areas where crop yield potential is high, soil nitrogen levels are low, and soil and environmental conditions are favorable for ammonia volatilization, the application of fertilizers containing urease inhibitors will have ****** benefits. Similarly, a similar situation exists with nitrification inhibitors. Factors such as different levels of soil fertility, different crop types, diverse varieties of nitrification inhibitors and the soil itself can bring about erratic yield increases with nitrification inhibitor-based fertilizers.

　　Organic fertilizer

　　Most organic fertilizers based on livestock and poultry manure are acidic after fermentation, which can aggravate soil acidification. From livestock and poultry manure, can also detect Bacillus genus, Escherichia coli and more than 10 genera of ****** and some parasites. And for industrial waste made of organic fertilizer, salt is too high is also a not insignificant problem, in some products, which the sodium ion content of up to 4% or more. How to make organic fertilizer *********, greener and more organic, is a test of the technical level and sense of responsibility of the producers.

　　Water soluble fertilizer

　　Shen Bing bluntly pointed out that blind imitation and backward technology is the prominent weakness of this fertilizer industry. Most of the enterprises are based on imported fertilizer formulations for imitation, very little consideration of local crop nutrient needs; most of the enterprises backward process, the product is simple mixing, easy to deliquescence or slate, uneven coloring, high impurities, poor water solubility. Moreover, in the distorted market competition mechanism, some enterprises are not in the technical innovation on the brain, but took the side road. Such as in order to cater to and mislead farmers, the massive use of ****** type of substances, such water-soluble fertilizer after application of the early effect is obvious, but not enough strength; in the choice of raw materials, based not on the nutrient distribution ratio, but according to the price of raw material selection, resulting in low effective nutrient concentration, the total concentration of nutrients do not go up; What's more, some companies play a counterfeiting trick to low-priced fertilizers such as magnesium sulfate, zinc sulfate, and so on. Add ****** to pass off as water-soluble fertilizer, or to magnesium sulfate, zinc sulfate and other low-priced fertilizers to replace part of the high-priced production of raw materials to make high profits.