论文部分内容阅读
研究和实践证明,作物需肥和土壤供肥之间,存在着作物养分供需平衡的自然规律;以施肥调整作物养分供需不平衡,能提高生产和增加收入,有重要的经济规律。研究和掌握作物需肥、供肥和施肥的自然规律和经济规律,解决氮磷化肥生产和施用的存在问题;按氮磷比例提高化肥生产和增加施用量,是加快农业生产发展和实现农业现代化的一个重要途径。
Research and practice have proved that there is a natural law of balance between supply and demand of crop nutrients between fertilization of crops and supply of soil fertilizers. There is an important economic law in fertilizing to adjust supply and demand imbalance of crop nutrients, increase production and increase income. Researching and mastering the natural laws and economical rules of manure, fertilizer and fertilization, and solving the problems of production and application of nitrogen and phosphorus fertilizers; increasing the production of fertilizers and increasing the application rate according to the proportion of nitrogen and phosphorus is to speed up the development of agricultural production and realize the modernization of agriculture An important way.