摘要
为了探索气候条件变化下不同熟期高粱品种的最适播期,研究中早熟、中晚熟、晚熟3个不同熟期高粱品种的不同播期与农艺性状和产量的关系。结果表明,高粱不同播期对株高、穗粒重、千粒重、产量的影响显著。中早熟品种最佳播期在5月15日左右,中晚熟和晚熟品种最佳播期在5月5日左右。积温、降水量与播期的关系是随播期的推迟而减少。播期对株高的影响是随播期的推迟而降低,播期对产量的影响是最佳播期产量最高,提早和推迟播期产量都表现为减产。积温与产量、降水量与产量的关系均呈正相关,但降水量与产量的相关系数较小。
In order to explore the suitable sowing dates under the condition of climate change. It studied early maturing, medium-late-maturing and late-maturing varieties of relationship between different sowing dates and agronomic characters, yield. It showed that： the different sowing dates significantly affected plant height, grain weight, grain weight and yield. The early maturing varieties were the best to sowing in May 15 or so. Medium-late-maturing and late-maturing varieties were the best to sowing in May 5 or so. Accumulated temperature, rainfall and sowing was the relationship with the delayed sowing reduced. Sowing the impact on plant height with the delayed sowing decreased, sowing date on yield was the highest yield optimum sowing date, sowing early and delayed production were expressed as production. Accumulated temperature and yield, the relationship between rainfall and yields were positively correlated, but the correlation coefficient between rainfall and yield was less.
出处
《农学学报》
2014年第4期1-4,37,共5页
Journal of Agriculture
基金
山西省科技攻关项目"高粱种质资源创制及专用新品种选育--北方粒用高粱高效控高技术研究"(20130311003-2)
山西省农业科学院重点项目"粒用高粱节水高产高效农机农艺一体化技术研究"(2013ZD02)
关键词
高粱
播期
积温
降水量
产量
Sorghum
Sowing Dates
Accumulated Temperature
Rainfall
Yield
