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2007年7月8—9日,四川省泸县发生了特大洪涝灾害,嘉明和福集2镇洪水淹没面积多达8 000 hm2,淹没时间为60—92 h,处于不同生育期的水稻受到了不同程度的生长抑制。通过野外追踪调查和示范区比较试验,提出在洪灾后结合水稻生育期、淹没时间、淹水深度、植株长势等指标判断水稻受害程度,并以各指标为依据果断采取相应的抗灾、减灾对策。初步分析认为,蓄留洪水再生稻是行之有效的灾后生产自救措施,同时揭示了早割低留桩、晚割高留桩、早割多施肥、晚割少施肥、保持浅水层和防治病虫害是蓄留洪水再生稻的关键技术。
July 8-9, 2007, a flood disaster occurred in Lu County, Sichuan Province. Floodwaters of Jiaming and Fuji Towns 2 flooded up to 8 000 hm2 and submerged time was 60-92 h. Rice at different growth stages was affected Different degrees of growth inhibition. Through field investigation and comparative experiment, it is proposed that the damage degree of rice should be judged after the flood by combining the growth period of rice, the time of inundation, the depth of waterlogging, the growth of plant and so on, and corresponding measures for disaster prevention and mitigation are taken decisively on the basis of each index. Preliminary analysis shows that flood-regenerated rice is an effective self-help measures for post-disaster production. At the same time, it is revealed that early low cut low pile, late cut high pile, early cut more fertilization, late cut less fertilization, keeping shallow water layer and controlling pests and diseases are Key technologies for storing flood and ratoon rice.