人工模拟机械开沟穴直播提高早籼稻茎秆抗倒伏能力及产量

易艳红,王文霞,曾勇军,谭雪明,吴自明,陈雄飞,潘晓华,石庆华,曾研华

Artificial Simulation of Hill-Drop Drilling Mechanical Technology to Improve Yield and Lodging Resistance of Early Season Indica Rice

YanHong YI,WenXia WANG,YongJun ZENG,XueMing TAN,ZiMing WU,XiongFei CHEN,XiaoHua PAN,QingHua SHI,YanHua ZENG

表5 茎秆物理性状与抗折力和倒伏指数相关性

Table 5 Correlation coefficients between stem physical properties and lodging index and breaking resistance (n=36)

指标 Index 抗折力Breaking resistance 倒伏指数Lodging index I1 I2 I3 I1 I2 I3 株高PH 0.156 0.169 -0.123 0.001 0.037 -0.063 重心高度GCH 0.471** -0.103 0.048 -0.142 0.211 -0.093 节间长度INL -0.275 0.097 -0.015 -0.284 0.034 -0.204 节间粗度IND 0.423* -0.091 0.168 0.022 0.152 -0.123 茎壁厚度CWT 0.432** 0.311 0.301 -0.144 -0.082 -0.143 节间干重DWI 0.443** 0.377** 0.496** -0.418** 0.041 -0.439** 单位长度节间干重DLI 0.445** 0.240 0.424** 0.214 0.065 -0.257 单位体积节间干重DVI 0.419* 0.234 0.263 0.193 -0.059 -0.240