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棉花地膜覆盖具有显著的增产效果。我省沿江棉区无霜期长,热量资源丰富,雨量充沛,春季气温回升慢,且不稳定,因此地膜棉出苗后常出现死苗重的现象。为阐明地膜棉出苗容易保苗难的内在原因,进行了地膜棉的生长特性和播期试验,为确立我省地膜棉适宜播期和防病保苗提供依据。
Cotton mulching has significant yield increase. The frost-free period in the cotton area along the Yangtze River in our province is long, with abundant heat resources and plenty of rainfall. The temperature in spring rebounded slowly and was not stable. In order to clarify the inner reasons of easy seedling emergence of mulching cotton, the growth characteristics and sowing date of mulching cotton were studied in order to provide the basis for establishing the appropriate seeding date and disease prevention and seedling protection of mulching cotton in our province.