| 中低产红泥田双季晚稻氮磷钾效应模型研究 |
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| 引用本文： | 彭恩明,吴修该,韦庆先,赵云峰,黄福兰,谭定贤.中低产红泥田双季晚稻氮磷钾效应模型研究[J].广西农学报,2012,27(1):5-8. |
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| 作者姓名： | 彭恩明 吴修该 韦庆先 赵云峰 黄福兰 谭定贤 |
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| 作者单位： | 1. 融安县土壤肥料工作站,广西柳州市,545400
2. 融安县农业技术推广站,广西柳州市,545400 |
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| 摘 要： | 采用"3414"二次回归D—最优设计,对影响水稻产量的氮、磷、钾三要素进行试验,建立融安县中低产红泥田双季晚稻施肥函数模型:y=3811.92+24.48N+6.3P+6.86K-0.10N2-0.43P2-0.09K2+0.13NP+0.01NK+0.23PK。通过该模型推算最高和最佳产量施肥量,并进行仿真模拟寻优,探索出产量大于5 700kg/hm2的施肥方案:N 135.8～195.8kg/hm2、P2O549.5～74.8kg/hm2、K2O 94.6～145.4kg/hm2,N∶P2O5∶K2O=1∶0.36～0.38∶0.70～0.74。
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| 关 键 词： | 水稻 氮磷钾效应模型 推荐施肥量 |
Study on N, P and K effectiveness model in late-rice of middle-lower yield paddy-field |
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| Institution: | Peng En-ming et al(Soil & fertilizer station of Rong’an County,Liuzhou,Guangxi 545400,China) |
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| Abstract: | To adopt a math design,an experiment of N,P and K effectiveness was conducted to obtain a math model for fertilization: y=3811.92+24.48N+6.3P+6.86K-0.10N2-0.43P2-0.09K2+0.13NP+0.01NK+0.23PK.By means of this model,the fertilizations of highest yield and best yield will be obtained.The fertilization program for yield more than 5700kg/hm2: N135.8～195.8kg/hm2、P2O5 49.5～74.8kg/hm2、K2O94.6～145.4 kg/hm2,N:P2O5:K2O=1:0.36～0.38: 0.70～0.74. |
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| Keywords: | Rice N P and K effectiveness model recommended fertilization amounts |
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