1.单季稻“五改”高产技术(1)高产途径由穗粒兼顾改为壮个体攻大穗,依靠促进个体生长,发挥大穗优势获得高产。(2)播栽季节由迟播迟栽改为适期播种短龄早栽,将移栽秧龄由以往的28～35天缩短为18～25天。缙云县500米海拔以下地区,适播期为5月中下旬。(3)种植密度由适当密植改为少 1. Single-cropping rice “five changes” high-yielding technology (1) High-yielding ways from spike grain to strong individual attack big spike, relying on the promotion of individual growth, give play to big spike advantage to obtain high yield. (2) The sowing season was changed from late sowing to late sowing and early sowing. The transplanting seedling age was shortened from 28 ~ 35 days to 18 ~ 25 days. Jinyun 500 meters below sea level, suitable sowing period in late May. (3) planting density changed from the appropriate dense planting less