机收留桩高度对‘甬优4149’再生稻生长发育与产量的影响
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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.
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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[2]易镇邪,屠乃美.再生稻研究的现状与展望[J].作物研究,2002,16(S1):230-234.
[3]易镇邪,屠乃美,陈平平.留桩高度对再生稻根系的影响[J].杂交水稻,2005,20(1):56-59.
[4]蒋廷杰,易镇邪,屠乃美.留桩高度对培矮64S/E32再生特性的影响[J].湖南农业大学学报(自然科学版),2005,31(4):359-363.
[5]易镇邪,周文新,屠乃美.留桩高度对再生稻源库性状与物质运转的影响[J].中国水稻科学,2009,23(5):509-516.
[6]何花榕,房贤涛,翁国华,等.留桩高度对再生稻生长发育和产量的影响研究现状及展望[J].中国农学通报,2012(9):6-10.
[7]陈梅香,陈象.不同留桩高度对超级稻中浙优1号作再生稻栽培的影响[J].福建农业科技,2013(11):9-11.
[8]孙晓辉.示踪研究头季稻留桩节位与再生稻的磷素利用和经济性状的关系[J].原子能农业应用,1984(4):7-17.
[9]邓凤仪.杂交稻再生利用高产规律研究[J].杂交水稻,1991(3):8-11.