In the early rice transplanting period in South China, growers in the near-producing areas are busy applying soil fertilizer to the soil to cultivate a fertile environment for rice growth. However, many growers have misunderstandings when applying fertilizers. Fertilizers instead of organic fertilizers cause excessive application of nitrogen fertilizer in the early stage of soil acidification. In response to this situation, the soil testing and fertilization column will answer in detail how rice is scientifically fertilized. Q: What is the fertilization characteristics of rice? The amount of rice required for fertilizer is 2.0-2.4 kg of phosphorus pentoxide per 0.9 kg of rice. 0.9-1.4 kg of potassium oxide is 2.5-2.9 kg. Considering the soil supply capacity, fertilizer utilization efficiency and production level, etc. The ratio of nitrogen, phosphorus and potassium to be fertilized should be 1:0.3-0.5:0.8-1. Q: What are the misunderstandings in rice cultivation? Nitrogen fertilizer is generally applied too much in the early stage. Long-term application of nitrogen fertilizer to rice growers can promote the growth of rice plants. However, excessive application will not only cause ineffective tillering, increase in greening, lodging, and increase in pests and diseases, which will also lead to a decrease in the rate of multi-fruiting of empty mites. In addition, the blind use of chemical fertilizers to invest less in organic fertilizers also causes serious acidification of some soils. Q: Why does rice have to be tested for soil fertilization? The growth of rice requires 16 elements such as nitrogen, phosphorus, potassium and medium and trace elements. Their functions and functions in crop growth and development are equally important, regardless of the amount of demand. According to the principle of “minimum nutrient lawâ€, no matter how many nutrients are needed for crops, but the crop yield is determined by the relatively minimum nutrient content in the soil, this minimum nutrient limits crop yield. Rice formula fertilization According to the proportion of rice absorbed fertilizer scientific formula fertilization to ensure that rice nutrient supply is not wasted, thereby increasing yield and quality is very necessary. Q: What are the benefits of adding organic fertilizer to rice? Organic fertilizer is a complete fertilizer containing various nutrients, in addition to nitrogen, phosphorus, potassium, sodium, magnesium, sulfur, calcium and various trace elements. Application of organic fertilizer can improve soil aeration performance, improve water retention and water retention performance, and promote robust growth of rice plants. It is conducive to high yield and quality of rice and can improve the quality and palatability of rice. Q: Do rice plants need to be supplemented with trace elements? The medium-quantity elements such as silicon, calcium, magnesium and sulfur all have the effect of enhancing the stress resistance of rice plants and improving the disease resistance of plants to promote rice growth. Practice has shown that the application of sulphur fertilizer in sulfur-deficient soil and the application of silicon fertilizer in silicon-deficient soil have significant yield-increasing effects. Trace elements such as zinc and boron can improve the supply of oxygen in rice roots, enhance the stress resistance of rice plants, improve the disease resistance of plants, promote the development of roots in the later stage, prolong the functional period of leaves, prevent premature aging, accelerate the development of flowers, increase the number of pollen, and promote the germination of flowers. It is beneficial to increase the rate of rice emergence; it can also promote the increase of seed setting rate and grain filling degree and increase rice yield. Q: How should scientific fertilization be applied to double-season early rice in South China? Control the total amount of nitrogen fertilizer combined with organic and inorganic to adjust the base fertilizer, the ratio of topdressing fertilizer to reduce the amount of nitrogen fertilizer in the early stage, and implement the nitrogen fertilizer to move backward. The base fertilizer is deeply applied to topdressing “with water and nitrogenâ€. Phosphate fertilizer is preferred for calcium magnesium phosphate or calcium. Appropriate application of silicon-containing alkaline fertilizer or base quicklime is applied to the field below pH 5.5. Zinc-deficient fields, submerged rice fields and low-temperature and widowed areas are supplemented with trace element zinc fertilizer. (Source: Southern Rural News) The URL of this paper: The characteristics of rice required for fertilizer and the problem of fertilization. Does rice planting need to supplement trace elements? Food Acidulants,Free Xanthan Gum,Guar Gum,Citric Acid Monohydrate Shanghai J.Shine Co.,Ltd , https://www.jshinechem.com