巧施水稻穗肥，不仅能增粒增重，而且是夺取水稻高产的有效途径之一。据测定：水稻从穗分化到抽穗所吸收的氮素养料，要占一生吸收量的50％～60％，这些养料一方面靠前期施肥，另一方面还要靠补施一些稳肥。在陕南稻区，农民习惯于施底肥和促率肥或一次性全量施肥，往往在水稻 Qiao Shi rice panicle fertilizer, not only by grain weight gain, but also an effective way to capture high yield of rice. It is determined that: rice from the ear to the heading of nitrogen absorption of nutrients, to account for 50% to 60% of the absorption of life, these nutrients on the one hand by pre-fertilization, on the other hand, but also rely on supplementation of some stable fertilizer. In the southern Shaanxi rice area, peasants are accustomed to applying base fertilizer and promoting fertilizer or one-time full-scale fertilization, often in rice