不同行比棉豆间作产量及经济效益分析

Analysis of Yield and Economic Benefit for Different Intercropping Row-ratios between Cotton and Soybean

以国审早熟春大豆湘春豆26和棉花湘杂棉8号为供试材料,研究了不同棉豆间作方式对大豆、棉花农艺性状及产量的影响。结果表明:在厢宽为2.4 m时,两行棉花间作4行大豆能形成较合理的棉豆间作复合群体,早熟春大豆能充分利用棉花生育前期及棉花行间空间资源,产生较高的群体经济效益,其最高经济效益可达36 233.9元/hm2,分别比清种大豆、清种棉花分别高226.88%和28.06%。

The precocious spring soybean variety Xiangchundou26 and the cotton variety Xiangzamian No.8 were taken as experimental material to study the effects of different intercropping row-ratios on agronomic characters and yield of soybean and cotton. The results showed that the optimum intercropping system is formed by intercropping four rows of soybean between two rows of cotton when the width of the planting compartment is 2.4 m. In this optimum intercropping system, the soybeans could take full advantage of the space resources in the early growth period of the cotton and between cotton rows, thereby producing high group economic benefit, and the highest one reached 36 233.9 yuan/hm2, which is 226.88% higher than the economic benefit of single planting soybean and 28.06% higher than the economic benefit of single planting cotton.