摘要
在广西南宁对玉美头168进行春播和秋播试验,以探讨不同播期对其生长发育及产量的影响。结果表明:春播玉米植株性状受气候影响较大,秋播玉米植株性状比较稳定。玉米品种玉美头168春播时随播期延迟生育期缩短,叶面积指数、光合势、干物质积累量、穗粒数、百粒重和群体生物产量下降,生物产量日增长量递增;3月中旬以后播种秃尖增加,穗位有增高趋势。秋播播种过早时,气温过高,植株发育过快而瘦弱;播种过迟光温有所下降而生物产量减小。综合认为玉美头168春播适宜在3月10日前播种,秋播最适时期在7月下旬至8月上旬。
The present study was conducted to explore the effects of different sowing dates on growth and yield of corn variety Yumeitou 168 based on spring and autumn sowing tests in Nanning, Guangxi. The results showed that corn plants sowed in spring were affected greatly by climate, while plants sowed in autumn were not. The spring planted Yumeitou 168 variety showed shorten period, lesser leaf area index, photosynthetic potential, dry matter accumulation, panicle number, 100-grain weight, population biomass, and the increasement of daily increase in biomass. Length of barren ear tip and ear height showed an increasing trend in the corn planted after 15th Mar. Yumeitou 168 planted ahead of time in autumn developed faster and weaker because of the high temperature, while biomass decreased in the plants planted late in autumn due to decline of light and temperature. The results revealed that suitable spring sowing date was before 10th Mar and the optimal autumn sowing date was between 15th Jul and 15th Aug.
出处
《广西农业科学》
CSCD
2010年第5期427-431,共5页
Guangxi Agricultural Sciences
基金
广西转化资金项目(桂科转0896002-12)"
新世纪十百千人才工程"人选专项资金项目(桂人函[2009]1092)
关键词
玉米
玉美头168
播期
生长发育
产量
corn
Yumeitou 168
sowing date
development and growth
yield
