不同密度杂草稻对栽培稻群体特征及穗部性状的影响  

Effects of Different Density Weedy Rice Density on Population Characteristics and Panicle Traits of Cultivated Rice

作　　者：杨庆[1] 马文东[1] 李大林[1] 王继馨[1] 张云江[1] 王翠[1] 宋成艳[1] 王桂玲[1] 

机构地区：[1]黑龙江省农业科学院佳木斯水稻研究所,黑龙江佳木斯154026

出　　处：《黑龙江农业科学》2016年第4期16-22,共7页Heilongjiang Agricultural Sciences

基　　金：国家科技支撑计划资助项目(2014BAD01B03-2);黑龙江省攻关重大资助项目(GA14B102)

摘　　要：为进一步提高栽培稻产量,以杂草稻wr04-12和栽培稻沈265为材料,在大田条件下研究了不同密度杂草稻对栽培稻群体及穗部性状的影响情况。结果表明:随着杂草稻密度的逐渐增加,栽培稻群体内的温度和照度明显降低,湿度升高;干物质生产显著降低,梗穗粒数和结实率随杂草稻密度的增大而逐渐降低。In order to improve the yield of rice,taking weedy rice wr04-12 and cultivated rice Shennong 265 as materials,the effect of weedy rice density on population characteristics and the traits of panicle of cultivated rice population were studied in field experiment.The results showed that with the increase of the density of weeds,the temperature and illumination in the cultivated rice group were decreased obviously,and the dry matter production was significantly decreased,the number of the branches,and the seed setting rate of the branches decreased gradually.

关 键 词：杂草稻 栽培稻 群体特征 穗部性状 

分 类 号：S511[农业科学—作物学]