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江西地处亚热带,由于气候影响及成土母质不同等原因,土壤一般表现出瘦、酸、板、旱等特点,在生产实践中普遍反应缺氮,大部分缺磷,相当部分缺钾、钙、硼、钼,部分缺硫、硅及锌。限制了作物产量的不断提高。近年来,随着化肥工业的发展,我省化肥供应不断有所增加,以1979年为例,全省共供应氮肥82万吨,磷肥64万吨(包括P_2O_5在12％以下的等外品),钾肥3.5万吨。按耕地面积计算,平均每亩有氮肥44斤、磷肥34斤、钾肥1.8斤,比1975年分别增加1.6倍、1.1倍、5倍。供应的化肥品种也略有增多,如复合肥料和硼、钼等微量元素肥料也开始施用。同时,施肥技术也有所提高。这对提高各项作物产量发挥了
Jiangxi is located in the subtropical zone. Due to the different climate and the different characteristics of the soil-forming parent material, soils generally show the characteristics of lean, acid, plate and drought. In practice, they generally respond to nitrogen deficiency, most of them lack phosphorus, , Boron, molybdenum, some sulfur deficiency, silicon and zinc. Limiting the continuous increase in crop yields. In recent years, along with the development of chemical fertilizer industry, the supply of chemical fertilizer in our province keeps increasing. Taking 1979 as an example, the province supplies a total of 820,000 tons of nitrogenous fertilizer and 640,000 tons of phosphate fertilizer (including the external products with P2O5 below 12%). , 35,000 tons of potash. Calculated on the basis of arable land, there are 44 kg of nitrogen fertilizer per mu, 34 kg of phosphate fertilizer and 1.8 kg of potassium fertilizer, 1.6 times, 1.1 times and 5 times more than in 1975 respectively. Supply of fertilizer varieties also increased slightly, such as compound fertilizers and boron, molybdenum and other trace element fertilizer also began to be applied. At the same time, fertilization technology has also increased. This has played a role in improving the yield of various crops