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以94份寒地早粳稻为材料,采用随机区组试验设计,研究膜下滴灌旱种对寒地水稻产量构成因素及产量的影响。结果表明:膜下滴灌旱种对水稻产量构成各因素、生物产量、经济系数、理论产量的影响具有双向性,且均偏向负向影响;膜下滴灌旱种降低了水稻产量构成因素(结实率除外)、生物产量、经济系数、理论产量的变异度;穗数、生物产量、理论产量对膜下滴灌旱种的反应较敏感,结实率、千粒质量对膜下滴灌旱种的反应较迟钝;穗粒数较多、生物产量、经济系数较高的水稻种质具有相对较强的旱种适应性;产量构成因素、生物产量、经济系数对膜下滴灌旱种反应较敏感的材料,一般其理论产量对膜下滴灌旱种的反应较敏感;生物产量、理论产量、千粒质量对膜下滴灌旱种反应敏感的材料,其千粒质量、理论产量、生物产量较高。
94 early winter rice in cold region were used to study the effects of dry film drip irrigation on the yield components and yield of rice in cold region. The results showed that the effects of drip irrigation under plastic film on the factors of rice yield, bio-yield, economic coefficient and theoretical yield were bi-directional and both had a negative effect. Dry film drip irrigation reduced the yield components (seed setting rate Except for biomass, economic coefficient and variation of theoretical yield. Spike number, biological yield and theoretical yield were more sensitive to the response of dry film mulching to drip irrigation. Seed setting rate and grain weight per thousand were less responsive to dry film drip irrigation ; Rice germplasms with a large number of grains per spike, high biological yield and economic coefficient had relatively strong adaptability to drought-tolerant species; and those with yield components, biological yield and economic coefficient were more sensitive to dry-farming under drip irrigation. The theoretical yield was more sensitive to the drought-tolerant drip irrigation. The bio-yield, theoretical yield and 1000-grain quality were sensitive to dry-seedling under drip irrigation. The quality, theoretical yield and biological yield of 1000-grain were higher.