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不同栽插株数对水稻“Y两优911"生育进程和产量的影响

来源:用户上传      作者:沈平 周国列

  摘要:【目的】研究不同栽插株数对水稻“Y两优911”生育进程和产量的影响。【方法】以两系杂交水稻“Y两优911”为材料,试验设计6组不同栽插株数,分别为2株/穴(TI)、3株/穴(T2)、4株/穴(T3)、5株/穴(T4)、6株/穴(T5)、7株/穴( T6),调查6种处理对水稻“Y两优911”生育进程和农艺性状的影响。【结果】不同栽插株数条件下,产量以栽插4株/穴的T3( 10426.45 kg/hm2)和5株/穴的T4( 10657.94 kg/hm2)处理为较高,显著高于其它处理.不同栽插株数对水稻“Y两优911”千粒重无大的影响,每穗总粒数从大到小为T2>TI>T3>T4>T5>T6,有效穗则表现为T6>T5>T4>T3 >T2>T1。【结论】不同栽插株数下,影响水稻“Y两优911”产量的主要因素是有效穗数,建议生产上机插株数以每穴4株或5株为宜,有利于协调有效穗数、每穗总粒数、结实率、千粒重等产量因子而获得高产。
  关键词:水稻;Y两优911;生育进程;产量
  中图分类号:S511
  文献标识号:A 文章编号:1003-4374(2021)06-0014-04
  Effects of Different Planting Number on Fertility Process and Yield of Rice"Y Liangyou 911"
  Shen Ping,Zhou Guo-lie
  ( Yulin Branch of Guangxi Academy of Agricultural Sciences/Yulin Academy of Agricultural
  Sciences, Yulin, Guangxi 537000,
  China)Abstract: [Objective] To study the effects of different planting number on fertility process and yield ofrice "Y Liangyou 911". [Method] Applying two-line hybrid rice "Y Liangyou 911" as material,sixgroups of different plant numbers were designed, which were 2 plants/hole (T1), 3 plants/hole (T2). 4plants/hole (T3 ) , 5 plants/hole (T4 ) , 6 plants/hole ( T5 ) , 7 plants/hole ( T6) , respectively. The effectsof 6 treatments on the fertility process and agronomic traits of rice "Y Liangyou 911" were investigated.[ Result] Under the condition of different planting number, the yield of T3 (10426.45kg/hm2) with 4plants/hole and T4 ( 10657.94 kg/hm2) with 5 plants/hole was higher than that of other treatments. Thethousand grain weight of "Y Liangyou 911" was not significantly affected by diff'erent planting number.The total number of' grains per spike from large to small was T2> T1> T3> T4> T5> T6: the effectivespike was presented as T6> T5> T4> T3> T2> T1. [Conclusion] Under the different planting number,the main factor affecting the yield of rice "Y Liangyou 911" is the effective spike number. It isrecommended that the number of seedlings in production is appropriate t0 4 0r 5 seedlings per hole,which is conducive to coordinating the number of effective ears. total grains per spike, firmness rate.thousand weight and other yield factors to obtain high yield.
  Keywords: rice. Y Liangyou 911. fertility process. yield
  玉林市是V西重要的粮食生产基地,是重要的双季稻高产区,优质水稻常年播种面积达25.33万公顷。[1]随着玉林市产业结构调整和区域经济快速发展,农村劳动力转移速率提高,农忙时节劳动力矛盾日渐突出[2],现阶段在玉林市水稻生产中存在用种量少、种植密度偏稀疏、基本苗不够等问题。不同的栽插株数下会影响水稻生长发育和产量,适宜的栽插株数有利于提高水稻产量。“Y两优911”是湖南袁创超级稻技术有限公司用“Y58S”作母本,“创恢911”作父本配组育成的两系杂交中籼品种[3],2020年通过广西壮族自治区农业农村厅引种备案(桂)引种[2020]第1号。为了掌握“Y两优911”水稻品种适宜的栽插密度,协调水稻个体与群体之间的关系,充分挖掘杂交稻高产潜力,于2020年晚稻在玉州区仁东镇张村开展了不同栽插株数对“Y两优911”生育进程和产量影响的试验,为生产上高产栽培提供参考。

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