不同播期对宁夏大豆产量及产量性状的影响

The Effect of Different Sowing Dates on Yield and Properties of Ningxia Soybean

[目的]明确宁夏地区大豆的适宜播种时期。[方法]以17个大豆品种为试材,分7期播种,研究不同播期对大豆生育期、产量、产量结构和农艺性状的影响。[结果]宁夏地区4月23日至6月23日播种大豆均可正常成熟,其中4月23日至5月13日播种大豆产量较高;随着播期延迟不同大豆品种的产量、株高、主茎节数、单株粒数、百粒重呈递减趋势,生育天数缩短。[结论]宁夏春播大豆适宜播种期是4月下旬至5月上旬,夏播早熟品种适宜播期为6月中旬至7月上旬。

[Objective] To make sure proper sowing date of Ningxia soybean.[Method] 17 soybean varieties were tested in seven patches to research the effect of different sowing dates on growth period,yield,properties and agronomic traits of soybean.[Result] The soybean sowed from April 23 to June 23 matured normally,those which were sowed from April 23 to May 13 had higher yield;the yield,plant height,node number on stem,grain number of single plant and 100-pellet weight gradually reduced and the growth period was shortened as the sowing date delayed.[Conclusion] As for spring sowing,the proper sowing date of soybean in Ningxia lasts from the late April to early May while for summer sowing,the proper sowing date is from middle June to early July.