不同栽插株数对水稻“Y两优911”生育进程和产量的影响

Effects of Different Planting Number on Fertility Process and Yield of Rice"Y Liangyou 911"

[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(T1)、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/hm^(2))和5株/穴的T4(10657.94 kg/hm^(2))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>T1>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。

[Objective]To study the effects of different planting number on fertility process and yield of rice"Y Liangyou 911".[Method]Applying two-line hybrid rice"Y Liangyou 911"as material,six groups of different plant numbers were designed,which were 2 plants/hole(T1),3 plants/hole(T2),4 plants/hole(T3),5 plants/hole(T4),6 plants/hole(T5),7 plants/hole(T6),respectively.The effects of 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(10426.45 kg/hm^(2))with 4 plants/hole and T4(10657.94 kg/hm^(2))with 5 plants/hole was higher than that of other treatments.The thousand grain weight of"Y Liangyou 911"was not significantly affected by different planting number.The total number of grains per spike from large to small was T2>T1>T3>T4>T5>T6;the effective spike 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 is recommended that the number of seedlings in production is appropriate to 4 or 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.