半直立耐密型水稻密度试验研究

摘要

半直立耐密型水稻育种是近年来提出的新型寒地水稻株型育种理论，根据良种良法相结合的现代农业要求，研究半直立耐密型水稻栽培模式十分必要，试验以半直立耐密型水稻品种垦稻26为材料，研究不同栽培密度对其产量及产量构成因素的影响。结果表明：在实际生产中，垦稻26最适栽培密度为24 cm ×10 cm ，其理论产量为8679．0 kg・hm‐2，此密度条件下，水稻群体各主要农艺性状最优，产量构成因素间相互协调配合。%Breeding of semi‐erect and density‐tolerance rice is a new breeding theory for cold region in recent years ,according to the good seed combinated with modern agricultural requirements ,it is necessity to study cul‐tivation pattern of semi‐erect and density‐tolerance rice ,taking semi‐erect and density‐tolerance rice variety Kendao 26 as test material ,the effect of different planting densities on yield and yield component factors was studied .The results showed that the optimum planting density of Kendao 26 was 24 cm × 10 cm in rice produc‐tion ,its theoretical yield was 8 679 .0 kg・hm‐2 ,Kendao 26 had excellent main agronomic characters ,mutual co‐ordination of yield components .