不同行向麦棉套种试验

Experiment on Relay Intercropping Wheat and Cotton in Different Row Orientation

以鲁麦22号和鲁棉研16号为供试品种,采取三二式套种模式,设计南北套种行向与东西套种行向作对比,研究了田间小气候及对棉花生长发育的影响。结果表明,行向不同造成近地面的采光效果不同,从而导致其他小气候要素的变化;东西行的光照强度、气温均比南北行高,相对湿度比南北行低。东西套种行的棉花发棵早,干物质积累快,实收产量比南北行增加了7.4%。得出结论,东西套种行向有利于改善近地面的光照条件,提高温度等,有利于棉花生长发育和产量的提高。

In the flied with wheat variety Lumai 22 and cotton variety Luyanmai 16, by using the intercropping model with 3 row wheat and 2 row cotton, the comparison of south-north intercropping orientation and east-west intercropping orientation was designed to study the circumstance of field microclimate and its effect on growth and development of cotton. The different orientation induced different lighting effect near ground, which resulted in changes of other microclimate factors. Both sunlight intension and air temperature in east- west orientation were higher than that in south- north orientation and the relative humidity was lower than in south - north orientation. The cotton seedling in east - west intercropping orientation had early standing and establishing, rapid dry matter accumulation, with the fact yield being 7.4% higher than that in south- north orientation. It was concluded that the intercropping in east- west orientation favored to improve the sunlight condition and increase temperature near ground, as well as to enhance the growth and development and yield of cotton.