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不同播种期与播种密度对水稻秀水128产量的影响
引用本文:蒋根水,沈建勋,肖辉.不同播种期与播种密度对水稻秀水128产量的影响[J].安徽农业科学,2008,36(17):7166.
作者姓名:蒋根水  沈建勋  肖辉
作者单位:杭州市原种场,浙江杭州,311115;杭州市原种场,浙江杭州,311115;杭州市原种场,浙江杭州,311115
基金项目:杭州市农业发展基金扶持项目
摘    要:目的]确定秀水128适宜的播期和栽种密度。方法]设计4个播期和3个栽种密度,研究不同播期和栽种密度对秀水128产量及经济性状的影响。结果]最高苗数、有效穗数、成穗率随播期推迟而增加,结实率随播期推迟而先增加后减少,千粒重以播期6月5日的最高(24.7g),产量也以播期6月5日的最高。最高苗数和有效穗数随栽种密度增加而增加,成穗率随栽种密度增加而减少,产量以栽种密度13.3cm×20.0cm的最高。播种期对秀水128产量的影响比栽种密度大。结论]在土壤肥力中等条件下,产量以6月5日播种,6月30日移栽,栽种密度20cm×20cm的最高,其次是6月15日播种,7月10日移栽,栽种密度13.3cm×20.0cm的处理。

关 键 词:秀水128  播种期  栽种密度  产量
文章编号:0517-6611(2008)17-07166-01
修稿时间:2008年4月14日

Effects of Different Sowing Date and Planting Density on the Yield of Rice Xiushui 128
SHEN Jian-xun.Effects of Different Sowing Date and Planting Density on the Yield of Rice Xiushui 128[J].Journal of Anhui Agricultural Sciences,2008,36(17):7166.
Authors:SHEN Jian-xun
Abstract:Objective] The research aimed to confirm the suitable sowing date and planting density of Xiushui 128.Method] Four sowing dates and three planting densities were designed to study the effects of different sowing date and planting density on the yield and the economic traits of Xiushui 128.Result] The highest seedling number,the number of effective spikes and the spike-bearing rate were increased with the prolonging of sowing date.The seed-setting rate first increased and then decreased with the prolonging of sowing date.When the sowing date was June 5,the yield was highest.The highest seedling number and the number of effective spikes were increased with planting densityincreasing increasing and the spike-bearing rate was decreased with planting density increasing.When the planting density was 13.3 cm×20.0 cm,the yield was highest.The effects of sowing date on the yield of Xiushui 128 was greater than that of planting density.Conclusion] Under the conditions of medium soil fertility,sowing on June 5,transplanting on June 30 and the planting density of 20.0 cm×20.0 cm,the yield was highest,followed by that of sowing on June 15,transplanting on July 10 and the planting density of 13.3 cm×20.0 cm.
Keywords:Xiushui 128  Sowing date  Planting density  Yield
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