不同播量对机插水稻群体生长发育及产量的影响

Effect of Seeding Rate on Population Characteristics and Yield of Machine Transplanted Rice

为完善盘锦稻区机插水稻精确定量栽培技术体系,探讨机插秧高产适宜播量。以盐丰47为供试材料,采用小区对比试验,通过设置不同播量处理,测定不同播量对水稻群体生长发育和产量的影响,结果表明,播量为97.5 g/盘的B3处理秧苗素质最好,本田群体生长量适宜,齐穗期和成熟期干物质产量最大,实际产量最高为10.95 t/hm2,比B2、B4、B1、B5处理分别高3.01%、5.80%、8.96%、12.77%。

In order to improve the precise and quantitative cultivation technology of machine-transplanted rice in Panjin and investigate the optimum seeding rate for higher yield of machine-transplanted rice, Yanfeng 47 was used as material and effects of seeding rate on rice growth and development and yield were studied by plot contrast test. The results showed that due to the appropriate population growth, the maximum dry matter in full heading and maturity stage, the more effective panicles and seed setting rate and 1000 grains weight, seeding rate of B3（97.5 g/disc） got the highest yield of 10.95 t/hm^2, which was 3.01%, 5.80%, 8.96%, 12.77% higher than B2, B4, B1, B5, respectively.