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发展麦套夏棉的六大有利因素王信达中国农科院棉花所河南安阳４５５１１２从自然规律上讲：生物体和生态条件是统一的。它必须在合理、优化的系统条件下，才能表现出良好的总体性状。以棉花生产为例，由于用种不当，栽培欠妥，普遍出现了棉花迟发、晚熟，品质差、产量低，...
Six favorable factors for the development of wheat summer paddy Wang Xinda Cotton Institute of Chinese Academy of Agricultural Sciences Anyang, Henan 455112 From the law of nature speaking: the biological and ecological conditions are unified. It must show good overall traits under reasonable and optimized system conditions. Take cotton production as an example. Due to improper planting and improper cultivation, cotton is delayed, late matured, poor quality, low yield, ...