播期对不同熟期组大豆品种产量及相关性状的影响

为不同熟期组大豆品种在河北沧州的推广应用提供依据,以熟期组Ⅰ组(吉育97、吉育89、绥农28、绥农35)、Ⅱ组(吉育82、吉育92、辽豆21、辽豆32)、Ⅲ组(中黄35、冀豆21、邯豆7、沧豆5)的12个大豆品种为试验材料,研究4个播期(6月16日、6月26日、7月4日、7月14日)对不同熟期组大豆产量及相关性状的影响。结果表明:随播期推迟,生育期、株高、主茎节数、单株荚数、单株粒数、单株粒重出现一定程度降低,且差异显著(P0.05),百粒重无显著差异(P0.05);熟期组Ⅲ组大豆的产量降低,熟期组Ⅱ组和Ⅰ组大豆的产量先升高后降低。在4个播期中,以熟期组Ⅲ组大豆冀豆21、邯豆7在播期6月16日的产量最高,分别为4 410.4kg/hm~2和4 329.0kg/hm~2。

Effects of Sowing Date on Yield and Relative Traits of Soybean Varieties with Different Maturity Group

The effects of four different sowing dates (16,June,26,June,4,July and 14,July) on yield and relative traits of 12 soybean varieties from Group Ⅰ (Jiyu 97,Jiyu 89,Suinong 28 and Suinong 35),Group Ⅱ (Juyu 82,Juyu 92,Liaodou 21 and Liaodou 32) and Group Ⅲ (Zhonghuang 35,Jidou 21,Handou 7 and Cangdou 5) were studied to provide the basis for popularization and application of soybean varieties with different maturity in Cangzhou,Hebei.Results:The growth period,plant height,node number,pods/plant,grains/plant and grain weight/plant reduce with delay of sowing date to some extent and there are significant differences(P＜0.05)in these traits among three groups.There is no significant difference in 100-grain weight among three groups.The yield of Group Ⅲ reduces with delay of sowing date but the yield of Group Ⅰ and Group Ⅱ presents a first rising and then declining trend with delay of sowing date.The highest yield of Jidou 21 and Handou 7 sowing on 16,June reaches 4 410.4 kg/hm2 and 4 329.0 kg/hm2 respectively in four sowing dates.