低纬高原紧凑型玉米高产栽培技术研究

Studies on the Cultural Technique of High yield Upright leaf Corn in Low latitude Plateau

通过田间试验探讨云南紧凑型玉米高产栽培技术。研究结果初步说明，在高密度、高肥水条件下，紧凑型玉米表现出高产特性，产量为１３５７０ｋｇ／ｈｍ￣２；在此基础上通过改变施肥技术（即施足底肥和种肥，重施穗肥补施粒肥），喷施微肥Ｂ，Ｍｇ，去雄，人工辅助授粉等措施可使产量进一步提高（增产幅度３％～９％）．并提出紧凑型玉米在云南高产栽培的一般技术要求。

The cultural technique of high yield upright leaf corn in Yunnan Provice wasexplored in this paper. The primary results were as follow: Under compact planting andhigh content of fertilizer and water conditions, upright leaf varieties of corn presentedthe characteristic of high yield, and the yield was 13 570kg / hm￣2. On the basis ofabove, yield could be raisd to 3～9percent with changing fertilization technique, spray-ing micronutrient Band Mg removing part of the tassels of the plants and supplementa-rying pollination.The main points of cultural technique of high yield of upright leafcorn in Yunnan was advanced.