精量穴直播晚稻的产量形成特性研究

Yield Formation Characteristics of Precision Hill-Direct-Seeding Late Rice

采用2种水稻密度的精量穴直播种植方式与人工移栽种植方式，对比研究了精量穴直播晚稻的产量形成特性。结果表明，2种密度的精量穴直播的实际产量比人工移栽的实际产量显著增加，分别增产2．75％-10．48％．精量穴直播较人工移栽的有效穗数多、结实率高．在孕穗期和齐穗期，精量穴直播的水稻叶片叶绿素含量显著高于人工移栽的，同时其光合速率也较高．

The yield formation characteristics of two density precision hill-direct-seeding were studied in late season rice, compared with manual transplanting. The results showed that the yield of two density precision hill-direct-seeding was higher than that of manual transplanting, and increased 2.75% - 10. 48% respectively. The effective panicle number and seed setting rate of precision hill-direct-seeding were significantly higher than that of manual transplanting. In booting stage and full heading stage, the leaf chlorophyll content and the photosynthetic rate of precision hill-direct-seeding was significantly higher than that of manual transplanting.