北疆连作棉田轮作倒茬模式的研究

于2007~2008年在多年连作的棉田上进行不同茬口轮作倒茬试验,以研究不同茬口对连作棉田土壤肥力及棉花生长的影响,从而筛选出适应棉田轮作倒茬的最佳种植模式。研究结果表明:不同作物茬口的土壤有机质、速效养分含量及棉花产量均高于连作棉田,其中加工番茄茬口对土壤的培肥效果总体表现最好;不同茬口的棉花产量表现为小麦-大豆→棉花加工番茄→棉花玉米//大豆→棉花小麦→棉花玉米→棉花CK。小麦-大豆或加工番茄可作为长期连作棉田的良好前茬。

Study on crop rotation patterns for field with continuous cropping of cotton in Northern Xinjiang

In 2007～2008 we selected field with years of continuous cropping of cotton to plant different crops so as to study their influence on soil fertility of cotton yield and to select the best rotational cropping mode. The results showed that soil organic matter, available nutrient content and cotton yield of the field where cotton is rotated with different crops are higher than that of continuous cropping of cotton (CK). And tomato is the best for soil fertility, and the yield of cotton production is: wheat-soybean→cotton > tomato→cotton > corn//soybean→cotton > wheat→cotton > corn→cotton > CK. So planting wheat-corn or tomato can be used as the best choice in rotating or inverting in the continuous cropping of cotton.