| Study on the effect of fertilizi ng on newly-built terrace in dryland area of mid-Gansu |
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| DOI：10.7606/j.issn.1000-7601.2009.01.10 |
| Key Words: dryland area of mid-Gansu newly-built terrace fertilization yield |
| Author Name | Affiliation | | WANG Shenglu | Institute of Beer Raw Materials, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070,China | | CUI Yunling | Institute of Soil and Fertilizer,Gansu Academy of Agricultural Sciences,Lanzhou,Gansu 730070,China | | ZHANG Fuwu | Institute of Beer Raw Materials, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070,China | | CHEN Bingdong | Science and Technology Association of Gansu Province,Lanzhou, Gansu 730000,China | | YANG Sicun | Institute of Soil and Fertilizer,Gansu Academy of Agricultural Sciences,Lanzhou,Gansu 730070,China |
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| Abstract: |
| The experiment was carried out on fertilization and soil fertility of Loessial soil of new ly-built ter-race in semiarid mountain areas in Gansu Provice. The results showed that cooperative application of organic fertilizer，nitrogen， phosphorus and potassium w as an important agronomic measure to increase soil fertility and
crops’yield of new ly built terrace. It could increase the crop yield by 21.4%~41.6%，the economical net in-
come by 283. 0~2557.2 yuan/ hm2, and the absorption of N，P2O5 and K2O above ground by 52.8%~70.1%, 115.0%~116.7% and 16.8%~92.7%, respectively. The utilty of soil water w as enhanced by 32.5%~37.1%, the topsoil available nutrients content were greatly improved. |
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