[目的]研究浚单玉米系列品种在黄淮海夏玉米种植区的气候适应性.[方法]通过选取浚单系列4个品种,分不同播期播种,探讨播期和气象条件对该系列品种生长发育及产量的影响.[结果]各品种的生育期随播种推迟而缩短,每推迟10 d播种,生育期平均缩短6.5 d,这可能与温度升高有关.由于播期推迟,穗长、穗粗、茎粗和产量下降.浚单509和浚单29较其他2个品种产量明显偏高;积温和日照对产量的影响最大,在吐丝后尤其明显.[结论]黄淮海地区应在麦收后提早播种玉米.%[Objective] Climate adaptability of Xundan maize varieties was studied in Huanhuihai summer maize planting area .[Method] Four cultivars of Xundan maize varieties were selected to investigate the effects of different sowing day and meteorological condition on the growth and yield of this series .[ Result] Growth period of each cultivar was shortened with the delay of sowing date.For ten days delay, the growth period was shortened 6.5 days.This may be related to temperature rising.For sowing date delayed, the ear length ,ear diameter, stem diameter and yield were decline.The yield of Xundan 509 and Xundan 29 were higher than those of the other two cultivars.The accumulation temperature and the sunlight had the greatest effect on yield.It was very obvious after spinning .[Conclusion]The sowing date in Huanghua-ihai area should be early after wheat harvesting.
展开▼
