| Study on greenhouse soil fertility characteristics of Weihe River upstream |
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| DOI：10.7606/j.issn.1000-7601.2016.05.31 |
| Key Words: Weihe River upstream greenhouse vegetable soil fertility |
| Author Name | Affiliation | | E Sheng-zhe | Institute of Soil and Fertilizer and Save water Agricultural, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China
Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Science, Beijing 100081, China | | HUANG Tao | Institute of Soil and Fertilizer and Save water Agricultural, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | WANG Ya-nan | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Science, Beijing 100081, China | | ZENG Xi-bai | Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Science, Beijing 100081, China | | YUAN Jin-hua | Institute of Soil and Fertilizer and Save water Agricultural, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | CHE Zong-xian | Institute of Soil and Fertilizer and Save water Agricultural, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | GUO Yong-jie | Institute of Soil and Fertilizer and Save water Agricultural, Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China |
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| Abstract: |
| The effects of long-term continuous cropping greenhouse vegetables on soil pH, total salt, organic matter, and N, P and K nutrients content of topsoil (0～20 cm) were studied through open field and greenhouse topsoil sampling during different cropping years in Wushan county Tianshui city located upstream of Weihe River. The results showed that pH of topsoil (0～20 cm) in greenhouse vegetable field during different cultivation years was all significantly lower than that of the open field, and with the extension of cultivation years, soil pH become declined significantly. Moreover, soil pH was significantly negatively related with cultivation years, 0.05 pH decline per year. In contrast, the soil total salt content was significantly positively related to cultivation years with 0.091% increase per year. For 14 years continuous cropping with greenhouse vegetables, soil total salt content reached to 0.34%, 6.35 times as much as that in the open field. Soil organic matter, total nitrogen, available nitrogen, total phosphorus, total potassium, available phosphorus and available potassium contents were also gradually increased with the increase of cultivation years. After 14 years of continuous cropping with greenhouse vegetables, soil available N, available P and available K contents reached to 230.17, 342.17 mg·kg-1and 263.00 mg·kg-1, respectively, significantly higher than those in the open field. |
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