不同灌溉方式对精量穴直播超级稻生产的影响

Effects of different irrigation methods on production of precision hill-direct-seeding super rice

为了探明精量穴直播超级稻湿润灌溉的需水量和不同灌水量对超级稻产量构成因素的影响,以指导精量穴直播超级稻节水灌溉,通过大田试验,研究了不同灌溉方式对精量穴直播和常规移栽水稻培杂泰丰(超级杂交稻)和玉香油占(超级常规稻)2个超级稻品种生产的影响。结果表明:精量穴直播湿润灌溉处理的灌水量相对于精量穴直播常规灌溉少23.51%,相对于移栽常规灌溉少30.46%,精量穴直播湿润灌溉处理和精量穴直播常规灌溉处理的产量没有明显差异,而这2个处理的理论产量分别比移栽常规灌溉处理高7.75%和9.62%,实际产量分别高9.18%和8.09%;精量穴直播湿润灌溉处理的干物质量和叶面积指数显著高于其他2个处理。说明湿润灌溉有利于精量穴直播超级稻高产的形成。

The object of this study was to explore the total water requirement of precision hill-direct-seeding super rice daring the entire growth period and the effect of different irrigation amounts on the yield components of super rice,the field experiment was conducted to study the effect of different irrigation methods on the production of precision hill-direct-seeding super rice,Yuxiangyouzhan（super inbred rice）and Peizataifeng（super hybrid rice）.The results showed that：although the water amounts of precision hill-direct-seeding sub irrigation less than that of Precision Hill-direct-seeding conventional irrigation by 23.51%,and less than that of transplanting conventional irrigation by 30.46%,there was no significant difference on their yield between precision hill-direct-seeding sub irrigation and precision hill-direct-seeding conventional irrigation,the theoretical yield of them was higher than transplanting conventional irrigation by 7.75%and 9.62%respectively,the real yield was higher than transplanting conventional irrigation by 9.18%and 8.09%respectively.The dry weight and leaf area index of precision hill-direct-seeding sub irrigation was higher than other treatments.These results showed that the sub irrigation was beneficial to high yield formation of precision hill-direct-seeding super rice.