不同产量水平的杂交籼稻品种穴直播茎秆抗倒特性及其差异性比较
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郭长春,张桥,孙永健,武云霞,徐徽,何艳,杨志远,马鹏,彭志芸,马均
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Comparison of stem lodging resistance characteristics and differences of indica hybrid rice cultivars with different yield levels in precision direct seeding
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Changchun GUO,Qiao ZHANG,Yongjian SUN,Yunxia WU,Hui XU,Yan HE,Zhiyuan YANG,Peng MA,Zhiyun PENG,Jun MA
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表8 基部节间抗折力和倒伏指数与穗部性状、茎秆主要物理性状的相关系数 |
Table 8 Correlation coefficients of breaking resistance, lodging index with panicle traits and main physical characteristics of culm |
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参量 Parameter | 抗折力 BR | 倒伏指数 LI | N1 | N2 | N3 | N1 | N2 | N3 | 穗长 Panicle lenght | -0.081 | -0.002 | -0.079 | 0.021 | -0.123 | 0.131 | 每穗一次枝梗数 First branch number per panicle | 0.790** | 0.764** | 0.805** | -0.542** | -0.302 | -0.462** | 每穗二次枝梗数 Second branch number per panicle | 0.753** | 0.619** | 0.677** | -0.693** | -0.433** | -0.643** | 单穗干质量 Dry mass per panicle | 0.454** | 0.536** | 0.559** | -0.653** | -0.521** | -0.601** | 着粒密度 Density of grain setting | 0.725** | 0.708** | 0.698** | -0.442** | -0.291 | -0.392* | 稻谷产量 Grain yield | 0.696** | 0.664** | 0.622** | -0.487** | -0.365* | -0.362* | 弯曲力矩 Breaking resistance | 0.833** | 0.637** | 0.820** | -0.538** | -0.431** | -0.362* | 节间长 Internode length | -0.733** | -0.675** | -0.575** | 0.607** | 0.471** | 0.256 | 茎秆长 Stem lenght | 0.372* | 0.469** | 0.448** | -0.133 | -0.142 | -0.281 | 重心高度 Gravity center height | 0.803** | 0.632** | 0.635** | -0.865** | -0.642** | -0.838** | 相对重心高度 Ratio of gravity center height | 0.787** | 0.601** | 0.621** | -0.858** | -0.617** | -0.814** | 节间粗度 Culm diameter | 0.749** | 0.749** | 0.773** | -0.603** | -0.538** | -0.616** | 茎壁厚度 Culm thickness | 0.669** | 0.722** | 0.687** | -0.461** | -0.474** | -0.653** | 秆型指数 Culm type index | 0.766** | 0.399* | 0.293 | -0.688** | -0.215 | 0.084 | 扁平率 Oblate rate | 0.484** | 0.701** | 0.626** | -0.326* | -0.487** | -0.665** | 空腔面积 Cavity area | 0.012 | -0.162 | -0.216 | -0.246 | -0.063 | -0.249 | 茎干质量 Dry mass of culm | 0.742** | 0.613** | 0.686** | -0.828** | -0.530** | -0.889** | 鞘干质量 Dry mass of sheath | 0.497** | 0.601** | 0.563** | -0.404* | -0.434** | -0.484** | 单位节间干质量 Dry mass of unit internode | 0.937** | 0.858** | 0.855** | -0.851** | -0.624** | -0.789** |
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