播期及密度对不同大豆品种农艺性状及产量的影响

Effects of Sowing Date and Plant Density on Agronomic Traits and Yield for Different Soybeans

田间条件下,以合农60(有限),垦丰16(亚有限)和合丰55(无限)3个大豆品种为试材,采用再裂区试验设计,探讨播期、品种和密度对不同大豆品种农艺性状及产量的影响。结果表明:播期显著影响大豆产量;播期和密度互作、品种和密度互作以及播期、品种和密度互作对大豆产量均产生影响,达到极显著水平。3个大豆品种在铁岭地区适宜播期为5月4日,在此播期下,合农60在密度45万株·hm^(-2)时产量最高,为1 810.5 kg·hm^(-2);而垦丰16和合丰55均在30万株·hm^(-2)时产量最高,分别为1 721.55和1 678.95 kg·hm^(-2)。

Three soybean cultivars of Henong 60,Kenfeng 16 and Hefeng 55 were used to study the effect of different sowing date,varieties and plant densities on agronomic characteristics and yield in field conditions. The results were as follows： sowing date affected soybean yield very significantly,the interaction of sowing date and density,varieties and plant density,sowing date,varieties and plant density affected soybean yield very significantly. The suitable sowing date was May 4th for Henong 60,the highest yield was achieved at planting density of 4. 5 × 105kg·ha^-1and the highest yield was 1 810. 5 kg·ha^-1;for Kenfeng 16 and Hefeng 55,the highest yield was achieved at planting density of 3. 0 × 105kg·ha^-1and the highest yield was 1 721. 55 and 1 678. 95 kg·ha^-1,respectively.