【摘要】 为减轻或避免高温热害对江西早稻产量及品质的影响,研究了不同播期、不同水分管理、不同肥料运筹、不同类型叶面肥及浓度和施用时期对早稻高温热害的缓解作用。结果表明,将播期提前到3月中下旬,采用轻干湿交替水分管理方式,氮肥后移、增施穗肥及抽穗扬花期喷施叶面肥能有效缓解早稻高温热害,减少早稻产量损失,同时还可增加群体通透性,减轻病虫害发生,减少农药用量,提高肥料利用率,减轻了农业面源污染,保护了生态环境,促进了农业可持续发展。更多还原

【Abstract】 In order to reducing or avoiding the high temperature damage to yield and quality of double cropping early rice, the mitigation techniques were studied in different cultivation experiments. The results showed that the mitigation techniques were effectively to alleviate high temperature damage, such as sowing during mid-late of march, adopting light dry-wet alternate irrigation water management method, nitrogen backwards, increasing panicle fertilizer and spraying leaf fertilizer on earing flowering stage of rice. The mitigation techniques could reduce the loss of rice yield, increase the group light transmittance, reduce plant diseases and insect pests,reduce pesticide dosage, improve the utilization rate of fertilizer, reduce the agricultural non-point source pollution, protect the ecolog-ical environment, promote the sustainable development of agriculture.更多还原