摘要
为明确鲜食玉米与大豆间作模式下鲜食玉米播期对群体产量和经济产值的影响,筛选鲜食玉米与大豆间作模式下鲜食玉米的适宜播期,试验通过选择鲜食玉米与大豆行比2∶4间作模式,以鲜食玉米和大豆单作为对照,设置3个鲜食玉米播期处理,分别在大豆播种后20 d(T1)、27 d(T2)、34 d(T3)播种。结果表明,3个处理下土地当量比分别为1.24、1.29、1.27,均具有间作优势;鲜食玉米错期间作模式下,鲜食玉米产量随播期延后而下降,延后播种34 d(T3)处理产量下降显著,大豆产量随鲜食玉米播期延后而增加,且较相同面积下单作大豆增产明显;3个播期处理的总产值均高于单作大豆和单作鲜食玉米,以鲜食玉米延后27 d(T2)播种总产值最高;在鲜食玉米与大豆错期间作模式下,鲜食玉米适当延后播种有利于鲜食玉米与大豆间作系统中2种作物产量潜力发挥和群体经济效益提高。
In order to clarify the effect of fresh maize sowing date on population yield and output value in fresh maize-soybean intercropping and to select the suitable sowing date of fresh maize,an experiment was carried out with the treatments included three sowing date of fresh maize such as 20 d(T1),27 d(T2)and 34 d(T3)after soybean sowing.In this study,the intercropping mode of fresh maize and soybean row ratio of 2∶4 was selected,and two control treatments of sole cropping fresh maize and soybean were set as well.The result showed that the land equivalent ratios under the three treatments were 1.24,1.29,and 1.27,respectively,all of which showed the advantages of intercropping.The yield of fresh maize decreased with the delay of sowing date,and the yield of the treatment delayed by 34 d(T3)decreased significantly.The soybean yield increased with the delay of the sowing date of fresh maize,and was significantly higher than that of sole cropping soybean in the same area.The output value of the three treatments was higher than that of the sole cropping fresh maize and soybean,and this value was the highest when the fresh maize was sowed 27 d(T2)later than soybean.In fresh maize-soybean intercropping,the appropriate delay of fresh maize sowing date was beneficial to the yield and the improvement of group economic benefits.
作者
牛永锋
昝凯
张莹莹
董文恒
郑丽敏
Niu Yongfeng;Zan Kai;Zhang Yingying;Dong Wenheng;Zheng Limin(Anyang Academy of Agricultural Sciences,Anyang 455000,Henan,China)
出处
《大豆科技》
2022年第4期18-22,共5页
Soybean Science & Technology
基金
安阳市科技攻关项目(2021C01NY027)。
关键词
鲜食玉米
大豆
间作
播期
Fresh maize
Soybean
Intercropping
Sowing date
