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于2010和2011年采用桂春8号春大豆新品种,在木薯间作大豆模式下,研究播期对大豆产量和主要农艺性状的影响。结果表明:大豆播期固定时,木薯不同播期对大豆产量和主要农艺性状均没有产生显著影响;大豆木薯同期播种时,随着播期的推迟,大豆生育期缩短,株高增加,茎秆变细,分枝数、单株荚数和粒数减少,脂肪含量无明显变化,4月5日播种时,大豆产量和蛋白质含量极显著低于其它处理。综合分析,大豆和木薯在3月25日之前播种的大豆产量、主要农艺性状及间作体系综合效益较好。
In 2010 and 2011, Guichun No. 8 spring soybean was used to study the effects of sowing date on soybean yield and agronomic traits in intercropped soybean. The results showed that during the sowing period of soybean, the different sowing date of cassava had no significant effect on the yield and main agronomic traits of soybean. When the soybean cassava was sown at the same time, the sowing period of soybean was shortened and the plant height was increased with the sowing date delayed. The number of seeds per plant, number of pods per plant and number of seeds per plant were decreased with no significant changes in fat content. When sown on April 5, soybean yield and protein content were significantly lower than those of other treatments. Comprehensive analysis shows that soybean and cassava sowed before March 25 soybean yield, the main agronomic traits and comprehensive benefits of intercropping system is better.