不同搁田始期对机插稻产量及产量构成因素的影响

对不同搁田始期机插稻的产量性状进行试验研究,结果表明：机插稻搁田始期适当推迟,有利于秧苗分蘖,促进群体增大,提高生物学产量,成穗数和总颖花量增加,但每穗粒数和每穗实粒数趋于下降。机插稻单位面积茎蘖数达预定穗数90%左右开始搁田,产量最高。

Effects on Yield of Mechanical Transplanting and Yield Components at Different Soil Drying Beginning

Yield of mechanical transplanting and yield components at different soil drying beginning were researched and the result indicated that delaying appropriately the stage of soil drying beginning were conducive to tillering, improve in- creasing group, increase productive panicles and total amount of spikelets, but the grain number per panicle and effective panicles tend to decrease, when the tiller number per unit area achieve 90% expected panicles tO soil drying, the high- est yield can be achieved.