| 摘要: |
| 研究表明，单独施用无机肥料虽可保持带田高产，但只有与有机肥料配合时才能促进土壤有机质的积累；带田生产中氮肥损失率不低于42.1%～54.7%，说明改进施肥方法、提高氮肥利用率仍是带田合理施肥的关键；施用无机磷肥特别是与有机肥配合施用是提高土壤磷肥力的有效措施，可提高有机磷含量及其占总磷量的比例，提高无机磷中有效及缓效组分所占比例，降低难溶组分（Ca10-P,O-P）的比例；带田耗钾强度高，必须注意钾肥的投入。 |
| 关键词: 带田，土壤培肥，土壤养分 |
| DOI： |
| 分类号:S158.3 |
| 基金项目:甘肃省科委资助项目 |
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| Soil Fertility Change and Fertility Improvementin Wheat/ Maize Strip IntercroppingⅡ.Effects of Different Fertilizers on Contents of Soil Nutrients |
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Zhang Lihui 1 Jin Shaoling 1 Li Long 1 Suo Dongrang 2 Wu Guoqing 2 Ma Yongtai 2 Sun Ningke 2,Zhang Lihui 1 Jin Shaoling 1 Li Long 1 Suo Dongrang 2 Wu Guoqing 2 Ma Yongtai 2 Sun Ningke 2,Zhang Lihui 1 Jin Shaoling 1 Li Long 1 Suo Dongrang 2 Wu Guoqing 2 Ma Yongtai 2 Sun Ningke 2
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| Abstract: |
| Experiments showed that sole application of inorganic fertilizer can
maintain high yields of wheat/maize in strip intercropping. But to promote the accumulation of organic matters in soil,inorganic fertilizers should be applied in combination
with organic fertilizer.The loss rate of N fertilizer in strip intercropping are no less than
42.1～54.7% suggested that the improvement of fertilizer application methods and increase of utilization ratio of N fertilizer are still a key problem in rational application of
fertilizers in wheat/maize strip intercropping.Application of P fertilizer,especially combination of inor ganic P fertilizer with organic fertilizer,is an effective practice to increase soil P fertility,which can increase the content of organic P in soil,increase the
proportions of available,slowly available portions in inorganic P, and lower the proportion of hardly available portions.Application of K fertilizer is also important because of
its heavy comsuption. |
| Key words: wheat/maize strip intercropping,soil fertility improvement,soil nutrients |
