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New fertilizer introduction
With the development of fertilization technology and the development of pollution-free agriculture, the structure of fertilizer input has undergone major changes, and new fertilizer varieties have emerged. These new fertilizers are in line with the development direction of pollution-free fertilization and have broad prospects for development. Its efficacy and characteristics are summarized as follows: 1. Refined organic fertilizers are generally processed from crop straws or livestock manures through decomposed, fermented, sterilized, mixed and crushing processes. Most of the raw materials come from agricultural waste. The main functional ingredient is organic matter, and the content is more than 50%. Its role is to provide nutrients for crops through mineralization of organic matter, and secondly to improve the soil environment in which roots grow and reproduce soil microorganisms through the organic mineralization, coordinate soil nutrient supply, fertile soil, and ensure the robust growth of crops, which is beneficial to improvement. product quality. Fertilizer is slow and long, and it needs to apply a certain amount of fertilizer. More for organic food, green food production. 2. Bio-fertilizer A type of fertilizer is formed by inoculating beneficial microorganisms with organic solutions or organic materials such as grass ash. The main functional ingredient is microbial bacteria. The international requirement for the number of organisms is no less than 200 million per gram. It cannot be used directly as a nutrient. According to the mechanism of action, it can be divided into two major categories: one is that when microorganisms are applied to the soil, they multiply in the soil environment and become dominant strains in the root zone of the crop, increasing the decomposition and release of nutrients in the soil and increasing the nutrient supply capacity of the soil. The other is the change of microflora or the influence of secretions after the microorganisms are applied to the soil. Change the root zone environment of the crop, promote the development of crop roots, and increase the ability of crops to absorb and utilize nutrients. 3, bio-organic fertilizer on the organic fertilizer close to the beneficial microorganisms made of fertilizer. Both the characteristics of refined organic fertilizer and biological fertilizer. 4. Organic-inorganic compound fertilizer Add a certain proportion of chemical fertilizers to the fully decomposed and fermented organics, and thoroughly mix and process the granulated compound fertilizers. The main functional ingredients are organic matter, nitrogen, phosphorus, and potassium. General organic matter content is more than 20%, nitrogen, phosphorus and potassium total nutrients are more than 20%. Because it can provide organic nutrients and inorganic nutrients at the same time, the efficiency of fertilizers is reduced and the advantages are complementary. It can reduce the fixation and leaching of inorganic nutrients, increase the utilization of chemical fertilizers and reduce environmental pollution. Currently widely used in fruit, vegetables and other economic crops and protected cultivation. 5. Fertilizer applied to the foliage of crops during the growth of foliar fertilizers. Generally divided into a large number of elements of leaf fertilizer, trace elements, leaf fertilizer, humic acid foliar fertilizer, amino acid foliar fertilizer. Its characteristics are as follows: direct absorption of foliar leaves is effective, nutrient utilization is high, and the supply of crop nutrients can be rapidly improved. Humic acids and amino acid foliar fertilizers can also enhance crop resistance and significantly improve product quality. 6. Controlled-release fertilizers Controlled-release fertilizers are a type of fertilizer with a slower release rate of nutrients from the soil than conventional fertilisers, and a longer fertilizer duration. There is no strict definition at present. Fertilizer is a new type of fertilizer formed by coating or adding biological and chemical inhibitors to denature. Such as coated urea, long-term ammonium bicarbonate, etc., are generally considered controlled release fertilizers. Due to its long-lasting and slow-acting properties, the release rate of nutrients is similar to or consistent with the law of crop absorption, and the nutrient utilization rate is increased by 6-15 percentage points. The pollution of the environment caused by fertilization is controlled to the lowest level. Controlled release fertilizer is the main direction of current fertilization technology innovation.