不同施氮量对饲用燕麦光合特性及氮素光合利用效率的影响
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郑敏娜, 梁秀芝, 康佳惠, 李荫藩, 王慧, 韩志顺, 陈燕妮
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Effects of Different Nitrogen Application Rates on Photosynthetic Characteristics and Nitrogen Photosynthetic Utilization Efficiency of Fed Oats
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Zheng Minna, Liang Xiuzhi, Kang Jiahui, Li Yinfan, Wang Hui, Han Zhishun, Chen Yanni
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表6 施氮量与光合特性、氮素利用率和生物特性之间的关系
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Table 6 Relationship between nitrogen application rate and photosynthetic properties, nitrogen utilization, and biological properties
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| 指标Index | 与施氮量关系Relationship with nitrogen fertilizer (x) | | Pn (y1) | y1=-0.00003x2+0.0201x+11.358 (R2=0.768**) | | Tr (y2) | y2=-0.0128x2+1.6546x+251.01 (R2=0.384*) | | Ci (y3) | y3=-0.00005x2+0.012x+3.33 (R2=0.798**) | | Gs (y4) | y4=-0.001x2+0.4021x+184.080 (R2=0.514**) | | RCC (y5) | y5=-0.003x2+0.007x+40.82 (R2=0.835**) | | LAI (y6) | y6=-0.000006x2+0.0063x+3.705 (R2=0.380*) | | 比叶重Specific leaf weight (y7) | y7=-0.0000007x2+0.00014x+0.2263 (R2=0.124ns) | | 叶片氮含量Leaf nitrogen content (y8) | y8=-0.0003x2+0.1087x+8.06 (R2=0.892**) | | Na (y9) | y9=-0.00002x2+0.0259x+1.8219 (R2=0.837**) | | PNUE (y10) | y10=0.0015x2-0.4358x+62.603 (R2=0.880**) | | 饲草产量Hay yield (y11) | y11=-0.0214x2+13.157x+6907.5 (R2=0.450**) | | 株高Plant height (y12) | y12=0.003x2-0.4522x+88.885 (R2=0.207ns) |
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