Effects of different planting densities on population structure and yield were studied under the condition of moist film mulching using Jihong 6,a large-scale rice variety planted in Jilin Province.The results showed that plastic film mulching could increase the effective accumulated temperature during the rice growth period sig-nificantly and promote the early growth and rapid development of rice.Among the 5 density treatments,the yield of 3 treatments with row spacing of 30 cm×13.33 cm(T1),30 cm×16.67 cm(T2),30 cm×20.00 cm(T3)exceeded 500 kg/667 m2,and the yield of T1 was the highest,reaching 592.09 kg/667 m2.T1,T2 and T3 had larger LAI,more dry matter accumulation,more effective panicles per unit area,and also reached high yield.T5 treatment had more tillers per hole,but less effective tillers per unit area and low yield.The results showed that,on the premise of ob-taining higher yield,population structure and lodging phenomenon,the optimum transplanting density of rice under the condition of wet film mulching is(30 cm× 16.67 cm)-(30 cm×20.00 cm).
关键词
水稻/种植密度/湿润覆膜/群体结构/产量/影响
Key words
Rice/Planting Density/Wet Film Mulching/Population Structure/Yield/Effect
维普
万方数据