不同种植密度对机插双季晚稻产量的影响  

Effects of Different Planting Densities on Yield of Mechanical Transplanted Double-cropping Late Rice

作　　者：张数标[1] 张琳[1] 吴华聪[1] 

机构地区：[1]福建省农业科学院水稻研究所,福建福州350019

出　　处：《湖南农业科学》2011年第8期27-28,共2页Hunan Agricultural Sciences

基　　金：福建省科技厅农业科技重点项目(2008N0111);福建省财政专项-福建省农业科学院科技创新团队建设基金资助(STIF-Y04)

摘　　要：选用3个生育期不同的品种,在双季晚稻采用14×30 cm和17×30 cm两种种植密度规格实施机插,成熟期测定产量和产量性状。研究种植密度对双季晚稻机械插秧产量的影响。结果表明:较短生育期品种采用较高种植密度产量较高,而较长生育期品种则是较低种植密度产量较高。生育期稍短的品种,适当增加种植密度,其产量库可与生育期较长品种相当,但结实率和千粒重则高于较长生育期品种,最终表现增产。Three rice varieties with different growth durations were selected and mechanical transplanted as double- cropping late rice with the two planting densities （14 cm×30 cm and 17 cm×30 cm）. The yield and the yield-related traits were measured at mature period to analyze the effects of planting density On the yield of mechanical transplanted double-cropping late rice. The results showed that high planting density was conducive to the yield increase for the cultivar with short growth period, while low planting density was conductive to the yield increase for the cuhivar with long growth duration. For the cuhivar with a slight shorter growth period, appropriately increasing planting density would make its tank of the yield equivalent to that of the variety with longer growth period, but the seed-set percentage and 1000- grain-weight were higher than those of the cuhivar with longer growth duration, so it expressed yield increase in the end.

关 键 词：双季晚稻 机械插秧 密度 产量 

分 类 号：S511[农业科学—作物学]