| 施肥对草原3号杂花苜蓿种子产量的影响 |
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| 引用本文： | 吴建新,云锦凤,张众.施肥对草原3号杂花苜蓿种子产量的影响[J].四川草原,2007(3). |
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| 作者姓名： | 吴建新 云锦凤 张众 |
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| 作者单位： | 内蒙古农业大学生态环境学院 内蒙古呼和浩特010019 |
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| 基金项目： | 内蒙古科技厅“十五”草业专项(20050202) |
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| 摘 要： | 采用“3414”二次回归设计,研究了N、P、K肥配施对草原3号杂花苜蓿种子产量的影响。结果表明,磷肥的增产作用最大,其次为钾肥,氮肥的影响最小;最高产量预期值达到578.55 kg/hm2的最佳施肥方案:氮肥81.0～114.75 kg/hm2,磷肥218.75～262.0 kg/hm2,钾肥96.0～138.0 kg/hm2,氮、磷、钾比例为N:P2O5∶K2O=1∶1.76～2.08∶1.17～1.33。
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| 关 键 词： | 施肥 草原3号杂花苜蓿 种子产量 |
The Effects of Fertilization on Seed Yield of Medicago varia Martin.cv.Caoyuan No.3 |
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| WU Jian-xin,YUN Jin-feng,ZHANG Zhong.The Effects of Fertilization on Seed Yield of Medicago varia Martin.cv.Caoyuan No.3[J].Journal of Sichuan Grassland,2007(3). |
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| Authors: | WU Jian-xin YUN Jin-feng ZHANG Zhong |
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| Abstract: | By means of the secondary regression design of "3414",the effects of combined N、P、K fertilization on seed yield of Medicago varia Martin.cv.Caoyuan No.3 were studied.The results showed that the effect of P fertilization on seed yield was largest,the next was K,and N fertilization was the smallest.The best scheme of fertilization was N fertilization 81.0～114.75 kg/hm2,P fertilization 218.75～262.0 kg/hm2,K fertilization 96.0～138.0 kg/hm2.The ratio of N、P、K fertilization was N∶P2O5∶K2O=1∶1.76～2.08∶1.17～1.33,which predicted value of the maxmium yield was 578.55 kg/hm2. |
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| Keywords: | Fertilization Medicago varia Martin cv Caoyuan No 3 Seed yield |
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