| Effect of combined application of qreen manure and chemical fertilizer on wheat yield and soil fertility |
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| DOI：10.7606/j.issn.1000-7601.2011.06.23 |
| Key Words: green manure multiple cropping soil fertility wheat yield Hexi oasis |
| Author Name | Affiliation | | ZHANG Jiudong | College of Resources and Environment, Northuest A & F University, Yangling ,Shaanxi 712100, China
Soil and Fertilizer and Water-saving Institute ,Gansu Academy of Agricultural Sciences,Larzhou 730070,China | | BAO Xingguo | Soil and Fertilizer and Water-saving Institute ,Gansu Academy of Agricultural Sciences,Larzhou 730070,China | | HU Zhiqiao | College of Resources and Environment, Northuest A & F University, Yangling ,Shaanxi 712100, China
Soil and Fertilizer and Water-saving Institute ,Gansu Academy of Agricultural Sciences,Larzhou 730070,China | | WANG Ting | Soil and Fertilizer and Water-saving Institute ,Gansu Academy of Agricultural Sciences,Larzhou 730070,China | | CAO Weidong | Institute of Agricultural Resources and Regional Planning ,Chinese Acaderny of Agricultural Sciences,Beijing 100081, China | | CHE Zongxian | Soil and Fertilizer and Water-saving Institute ,Gansu Academy of Agricultural Sciences,Larzhou 730070,China | | YANG Wenyu | Soil and Fertilizer and Water-saving Institute ,Gansu Academy of Agricultural Sciences,Larzhou 730070,China | | L Quanfu | Soil and Fertilizer and Water-saving Institute ,Gansu Academy of Agricultural Sciences,Larzhou 730070,China | | WANG Jian | College of Resources and Environment, Northuest A & F University, Yangling ,Shaanxi 712100, China |
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| Abstract: |
| An experiment was carried out in Gansu Hexi oasis irrigation area to investigate，under the condition of
total amount of N application remaining unchanged, the effect of green manure replacing chemical fertilizer with the same content of N on wheat yield and chief characteristics，soil fertility and soil microbial quantity . The results showed that，in the first year, the wheat yield decreased with the increase of green manure, but the content of soil available N, P, K and organic matter increased after green manure harvest; In the second year， the increase of green manure increased wheat yield, and 70% green manure N+30% chemical fertilizer N achieved the highest yield of 8 562 kq/ hm2，24.7% more than that by FFP. Green manure replacing N fertilizer by 30%~45% improved soil fertility and wheat yield，and had good economic and ecological benefits. |
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