机构地区: 湖北省农业科学院
出 处: 《湖北农业科学》 2011年第3期457-460,共4页
摘 要: 采用机械精量穴直播、人工撒播和人工手插3种种植方式(4个处理),对比研究了不同种植方式下水稻的生育特性和产量形成特性。结果表明,在不同生育期机播20及机播25处理的单穴植株地上部分干重高于人工手插和人工撒播处理。机械精量穴直播和人工撒播最终叶龄数较人工手插处理少1叶左右。机播20和机播25的收获指数较人工撒播分别提高3.94和4.35个百分点。机播20的实际产量最高,机播20和机播25的实际产量较人工撒播分别增产17.45%和5.72%。 Growth characteristics and yield formation of early rice under different planting mode were studied by comparing precision hill-drop drilling(PRHD) with manual broadcasting and manual transplanting.The results showed that plant shoot dry weight of precision hill-drop drilling with the row space of 20cm(PRHD-20) and 25cm(PRHD-25) were higher than manual transplanting(MT) and manual broadcasting(MB) in different growth stage.The total leaf age of PRHD and MB reduced 1leaf or so than MT.The harvest index of PRHD-20 and PRHD-25 increased significantly by 6.69% and 7.38% than that of MB,respectively.The actual yield of PRHD-20 was the highest.The actual yield of PRHD-20 and PRHD-25 were 17.45% and 5.72% higher than MB,respectively.