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农桐间作是平原绿化的重要内容之一。从1971年以来,德州地区农桐间作不断发展,到“六五”期末已达105万亩。关于农桐间作的效益,特别是对小麦增产效益问题,国内已有不少研究。笔者为了摸清泡桐对棉花产量的影响,探讨合理的桐棉配置结构,于1982年进行了桐棉间作光照条件的测定分析,现将测定结果总结如下。
Intercropping of farmland is one of the important contents of plain afforestation. Since 1971, the inter-cropping of Agrotis fortunei in Texas has been continuously developing, reaching 105 million mu by the end of the “6th Five-Year Plan” period. Inter-crop farming on the benefits, especially for wheat yield increase efficiency, there have been many domestic studies. In order to find out the effect of Paulownia on cotton yield, and to explore the reasonable structure of Paulownia cotton, we conducted the determination and analysis of the lighting conditions of Paulownia intercropbae in 1982. The results of the determination are summarized as follows.