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近几年来,杂交中稻和迟熟中稻“广二矮”、“科字六号”等栽培面积迅速扩大,已成为许多地方的当家品种。据调查,不少社队由于施肥过多或施肥过迟,造成了“肥害”,引起减产,因而误认为“杂交稻没有优势”、“迟熟中稻不如中熟中稻”。针对生产中的这一问题,我们于1976年以来用杂交稻、迟熟中稻为材料,以施肥技术为主要促控手段,进行了一系列试验研究工作,取得了显著成效,示范推广后,增产效果显著。
In recent years, hybrid mid-season rice and late-maturing middle rice “Guang Er Dai”, “Ke Zi 6” and other rapidly expanding cultivation area, has become a mastermind in many places. According to the survey, many commune teams mistakenly thought that “hybrid rice has no advantage” and “late maturing medium-grade rice is inferior to middle-maturing medium-sized rice” due to over fertilization or late fertilization, resulting in “fatal injury” and causing a decrease in production. For the production of this issue, we have hybrid rice, late maturing medium rice as material, fertilization technology as the main means of control and promotion, conducted a series of experimental research work, and achieved remarkable results. After demonstration and promotion, increase production Significant effect.