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水稻—甘薯—白萝卜耕作模式有利于缓解人多耕地少的矛盾,可充分利用当地的有效积温,合理利用耕地,提高复种指数;不同科属间的作物实行水旱轮作,既可以合理利用土壤中的营养元素及当地的温光资源,达到增产增收增效的目的。同时不同作物分别从土壤中吸收的营养成分各不同,作物残体回田既培肥了土壤,又净化了环境,为土壤资源的可持续利用创造良好基础;水旱轮作及不同科属作物轮作,明显改变了病虫草害的生存环境,有效减少了初发生源,达到减轻有害生物发生为害的目的,取得了较好的经济效益和生态效益。
The mode of cultivation of rice-sweet potato-white radish is beneficial to alleviating the contradiction between the small number of cultivated land and the less cultivated land, making full use of the effective accumulated temperature in the area, making rational use of arable land and increasing the multiple cropping index. The crop rotation and crop rotation between different genera can make rational use of soil In the nutritional elements and the local temperature and light resources, to achieve the purpose of increasing production, increasing revenue and increasing efficiency. At the same time, the nutrients absorbed by different crops from the soil are different from each other. The crop residues returned to the fields not only fertilize the soil but also purify the environment, thereby creating a good foundation for the sustainable utilization of soil resources. Crop rotation and crop rotation , Significantly changed the living environment of pests, diseases and weeds, effectively reduced the occurrence of primary sources and achieved the purpose of alleviating the occurrence of pests and achieved good economic and ecological benefits.