【摘要】 [目的]解决杂交稻精量机穴播匀播稀播难题,形成不同播种方式对水稻产量的影响。[方法 ]采用2BD-NS3水稻点播机,用单季籼粳杂交稻进行4种不同行距机穴直播播种方式试验。[结果 ]同等条件下,4种机穴直播播种方式与手工撒直播比较,用种量降低,基本苗少,穗粒结构协调,充分发挥了籼粳杂交稻穗大粒多的优势,增产效果较好,其中宽窄错行播种方式增幅最大,为5.65%。[结论]2BD-NS3水稻点播机行距、错行调节方便,适用中小规模的种粮户及小型田块使用。更多还原

【Abstract】 [Objective]The aim of this study was to solve the problem of hole sowing with precision machine for hybrid rice,and to study the effect of different sowing methods on rice yield. [Method]Four kinds of direct seeding methods of single season indica-japonica hybrid rice with different row spacing were tested by 2 BD-NS3 rice planter. [Result]Under the same conditions,compared with the manual sowing,the four kinds of direct seeding methods had the advantages of lower seed consumption,fewer basic seedlings,and coordinated ear-kernel structure,which gave full play to the advantages of large panicles and more grains in indica-japonica hybrid rice,and the effect of yield increase was better,among which the wide-and-narrow-row staggered seeding method had the largest increase of 5.65%. [Conclusion]The 2 BD-NS3 rice planter was convenient for row spacing and staggered row adjustment,and was suitable for small and medium-sized grain growers and small fields.更多还原