高纬寒地插秧密度对龙粳47生长性状和产量的影响  

Effects of Trasplantling Density on Growth Characters and Yield of Longgeng 47 in High Latitude and Cold Region

作　　者：王松 WANG Song(Heihe Branch,Heilongjiang Academy of Agricultural Sciences,Heihe 164300,China)

机构地区：[1]黑龙江省农业科学院黑河分院,黑龙江黑河164300

出　　处：《黑龙江农业科学》2022年第10期17-21,共5页Heilongjiang Agricultural Sciences

基　　金：黑龙江省重点研发计划(GA21B002);国家耐盐碱水稻技术创新中心东北中心黑河站。

摘　　要：为了系统地研究插秧密度对高纬寒地水稻生长发育规律的影响,以龙粳47为试验材料,分别设置了3种插秧密度,即30.0 cm×10.0 cm、30.0 cm×13.2 cm和30.0 cm×16.6 cm,研究不同插秧密度对龙粳47的茎蘖动态、干物质量积累、叶面积指数、产量及产量构成因素等指标的影响。结果表明,在不同插秧密度下,龙粳47的茎蘖动态、干物质量积累、叶面积指数、产量及产量构成因素等指标均在插秧密度为30.0 cm×13.2 cm时达到峰值,且其千粒重、结实率和产量分别达30.4 g、92.3%和5085.75 kg·hm^(-2)。因此插秧密度为30.0 cm×13.2 cm时,为龙粳47在黑河市最适插秧密度。In order to systematically study the influence of transplanting density on the growth and formation law of rice in high latitude and cold region,Longeng 47 was taken as the test material,three transplanting densities(30.0 cm×10.0 cm,30.0 cm×13.2 cm and 30.0 cm×16.6 cm)were set,respectively.The effects of different transplanting densities on tillering dynamics,dry matter mass accumulation,leaf area index,yield and yield components of Longgeng 47 were studied.The results showed that,under different transplanting densities,the stalk tillering dynamics,dry matter accumulation,leaf area index,yield and yield components of Longgeng 47 reached the peak at transplanting density of 30.0 cm×13.2 cm(treatment 2).The 1000-seed weight,seed setting rate and yield of treatment 2 were 30.4 g,92.3%and 5085.75 kg·ha^(-1),respectively.Therefore,the transplanting density of Longgeng 47 is the treatment 2,which is the optimal transplanting density in Heihe.

关 键 词：龙粳47 插秧密度 水稻 产量 

分 类 号：S511.22[农业科学—作物学]