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水稻半旱式栽培,是近几年我国南方稻区改造中、低产田,提高粮食单产的有效措施。这种耕作方式,是在水田中开沟起垅,沟垅相间,垅上半旱,垅面种稻,水稻收获后不耕不翻,即改每年翻耕为自然兔耕,改传统淹水平作为半旱拢作。沟内蓄水养鱼、养萍及种植其他水生植物,进行综合利用。具有快速、高效和培肥土壤的优越性。目前,这项技术已在南方许多省逐渐得到推广,并产生出显著的经济效益和社会效益。四川省在1985年推广55.5万亩,1986年又推
Semi-arid cultivation of rice is an effective measure to improve middle and low yield fields and improve grain yield in southern China in recent years. This farming method is to open up ditches in the paddy fields, ditch and white, droughts on the first half drought, Kamei paddy rice, rice is not plowing after harvest, that is to change the annual tillage for natural rabbit farming, change the traditional submergence level As a semi-dry farming. Ditch aquaculture fish, raising Ping and planting other aquatic plants for comprehensive utilization. Has the advantages of fast, efficient and soil fertility. At present, this technology has been gradually promoted in many southern provinces and has produced significant economic and social benefits. Sichuan Province promoted 555,000 mu in 1985 and pushed again in 1986