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棉花、晚稻是我国农村的两大主栽作物，长江黄淮海流域收获后一般在 10月中、下旬，气温转凉，仅能播种晚茬小麦和早稻，经济效益极低。很多地方如鲁西北棉区、冀中南棉区干脆闲置一冬，明年种春棉花。如何科学地利用这些闲置土地 ?这成了粮棉产区干群需迫切解决的问题，菏泽高
Cotton and late rice are the two main crops in rural areas of China. After harvesting in the Huang-Huai-Hai River Basin, the temperature is generally cool in mid-October and late October. Only the crop of late-crop wheat and early rice can be planted with very low economic benefits. In many places, such as the northwestern part of Shandong Province, the southern part of Hebei Province is simply idle for one winter and the next kind of spring cotton. How to use these idle land scientifically? This has become an issue urgently solved by the cadres and masses in grain-cotton producing areas. Heze High