摘要
为明确‘甬优4149’头季稻机械收获留桩高度对再生稻生长发育与产量的影响,在10、15、20、25、30、35 cm等6个留桩高度下开展了大田试验。结果表明:随留桩高度提高,再生稻生育期缩短,再生苗数有所减少但成穗率显著提高,每穗粒数减少但有效穗数、结实率、千粒重与产量显著提高。本试验条件下,‘甬优4149’头季稻机械收获留桩高度以30~35 cm为宜,能实现早熟、高产目的。
To clarify the effect of the stubble height with mechanical harvest on the growth and development and yield of‘Yongyou 4149',a field experiment was conducted with treatments of 6 stubble heights,10 cm,15 cm,20 cm,25 cm,30 cm and 35 cm. The results showed that: with the increment of stubble height,the growth duration of ratoon rice was shortened,ratoon tillers was decreased,but the spike rate was significantly increased,grain number per panicle was decreased,but the effective panicles,seed setting rate,1000-grain weight and yield were significantly increased. In this study,the optimal stubble height with mechanical harvest of ‘Yongyou 4149'was 30-35 cm,which could realize the purpose of early maturity and high-yielding.
引文
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