| 长期施肥的作物产量和土壤肥力变化 |
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| 引用本文： | 林葆,林继雄.长期施肥的作物产量和土壤肥力变化[J].植物营养与肥料学报,1994,0(1):6-18. |
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| 作者姓名： | 林葆 林继雄 |
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| 作者单位： | 1.中国农业科学院土壤肥料研究所 100081;中国农业科学院土壤肥料研究所 100081 |
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| 摘 要： | 本文是全国化肥试验网1981年以来进行的70个长期肥料试验的总结。主要研究在不同种植制中长期施用化肥或有机肥或两者配合施用条件下作物的产量、肥料效应和土壤肥力变化。结果表明,化肥只有氮磷钾配合时,才能获得高产,稳产;化肥与有机肥配合可进一步提高产量。氮肥肥效普遍较高,磷钾肥肥效因地区和作物有较大差异和变化;有机肥有叠加效应,肥效逐年上升。从土壤理、化和生物性状测定结果看出,有机肥能明显提高土壤肥力,氮磷钾化肥配合也能提高土壤肥力。根据养分平衡及产量、肥力的变化,提出了合理的肥料结构。
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| 关 键 词： | 肥料长期试验 化肥 有机肥 作物产量 土壤肥力 |
THE CHANGES OF CROP YIELD AND SOIL FERTILITY WITH LONG-TERM FERTILIZER APPLICATION |
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| Lin Bao Lin Jixiong Li Jiakang.THE CHANGES OF CROP YIELD AND SOIL FERTILITY WITH LONG-TERM FERTILIZER APPLICATION[J].Plant Nutrition and Fertilizer Science,1994,0(1):6-18. |
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| Authors: | Lin Bao Lin Jixiong Li Jiakang |
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| Affiliation: | 1.Soil and Feltilizer Institute;CAAS;100081 |
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| Abstract: | A number of long-term fertilizer experiments were laid out by China National Network on Evaluation of Chemical Fertilizer Use around 1981. Results from 70 experiments, are summarized in this paper. The main objective of conducting these experiments is to monitor the changes of crop yield and soil fertility with successive use of chemical fertilizer and organic manures alone, or in their comb -ration. It is indicated that only when NPK fertilizers are used together can a high and stable yield be kept, a more higher yield can be obtained if organic manure is added.In general, the effect of N fertilizer is higher than of P and K fertilizer, and effect of P and K fertilizers varies with soils and crops. The effect of organic manure is increasing with application years because of its accumulated impacts. According to the changes of soil physical, chemical and biological properties, soil fertility can be improved obviously by use of organic manure,and also improved by integrated use of NPK fertilizers. A proper fertilizer formulation is put forward for maintaining balance of nutrients and increasing yield and fertility. |
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