不同种植方式对杂交水稻生产力的影响

Effects of Different Planting Methods on Hybrid Rice Productivity

为探讨不同种植方式下水稻生产力差异,以杂交水稻品种江优919为试材,设置手插秧、丢秧、机插秧和直播4种种植方式,研究不同种植方式对水稻生长发育及产量形成的影响。结果表明:水稻产量以手插秧>丢秧>机插秧>直播;有效穗数以丢秧和直播高于手插秧和机插秧处理;每穗粒数以手插秧最高,直播稻最低;结实率以丢秧和机插秧处理略高于手插秧,直播稻的最低;千粒重为手插秧最高,直播稻最低。水稻全生育期以手插秧>丢秧>机插秧>直播,茎蘖高峰苗数以丢秧>直播>机插秧>手插秧,成穗率以手插秧>机插秧>直播>丢秧,主茎叶片数以手插秧>丢秧>机插秧>直播,株高以手插秧>机插秧>丢秧>直播。水稻生产总成本投入以手插秧>机插秧>丢秧>直播,纯收入以丢秧>手插秧>机插秧>直播,产投比以丢秧>直播>机插秧>手插秧。

To investigate the difference of rice productivity under different planting patterns,using the hybrid rice variety Jiangyou 919 as test material,four kind of planting patterns including artificial planting（AT）,throwing planting（TP）,directed seeding（DS）,mechanical planting（MP）were set out to research the growth characteristics and yield formation.The results showed that：Rice yield under different planting patterns performed as AT〉 TP 〉MP 〉DS.The productive panicles of TP and DS were higher than that of AT and MP.The AT rice had highest spikelets per panicle and the DS rice had the lowest spikelets per panicle.And the DS rice had the lowest seed setting rate and 1000-grain weight.Under four planting patterns,the whole rice growth duration performed as AT〉TP〉MP〉DS,the peak tillers performed as TP〉DS 〉MP〉 AT,the productive tillers ratio performed as AT 〉MP 〉DS〉 TP,the total leaves performed as AT〉TP〉MP〉DS,the plant height performed as AT 〉MP 〉TP 〉DS.The total cost of rice production of the whole rice growth duration performed as AT 〉MP 〉TP 〉DS,the net income performed as TP AT MP DS,the income/income performed as TP〉DS 〉MP〉 AT.