| Effects of foxtail millet continuous cropping on soil enzyme activities and nutrients |
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| DOI：10.7606/j.issn.1000-7601.2016.03.19 |
| Key Words: continuous cropping soil enzyme soil nutrient foxtail millet continuous cropping obstacle |
| Author Name | Affiliation | | MIAO Jia-yuan | State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, Shaanxi China | | LI Xia | State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, Shaanxi China | | ZHOU Da | State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, Shaanxi China | | GAO Yang | State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, Shaanxi China | | GAO Xiao-li | State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, Shaanxi China | | WANG Peng-ke | State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, Shaanxi China | | GAO Jin-feng | State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, Shaanxi China | | YANG Pu | State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, Shaanxi China | | FENG Bai-li | State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, Shaanxi China |
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| Abstract: |
| In order to explore the effects of foxtail millet continuous cropping on soil environment, a 4-year located field experiment based on different continuous cropping years (T1:2 years, T2:3 years and T3:4 years) of foxtail millet without fertilization was conducted in the north semi-arid region. Foxtail millet rotated with legume crops was set as the control (CK). The soil nutrient, the enzyme activities of urease, alkaline phosphatase (ALP), sucrase and catalase were determined in the experiment. The results showed that compared with CK, the yields of T1, T2 and T3 were decreased by 6.9%, 12.7% and 35.6%, respectively. With the increase of the foxtail millet continuous cropping years, the yield of foxtail millet became decreased and soil pH went increased. Compared with CK, the contents of N and P were decreased, in particular the content of available N (P<0.05). The changes of available K were not significantly (P>0.05). The enzyme activities of urease, alkaline phosphatase (ALP), sucrase and catalase became decreased year after year under the continuous cropping, and the activity of each enzyme in T3 was significantly lower than that in other treatments (P<0.05). |
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