| Effects of different plastic-film mulching on soil water and water use efficiency of dryland bean (Phaseolus vulgaris L.) |
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| DOI：10.7606/j.issn.1000-7601.2011.05.08 |
| Key Words: dryland bean (Phaseolus vulgaris L.) plastic-film mulching water use efficiency |
| Author Name | Affiliation | | ZHANG Zhongping | Tianshui Academy of Agricultural Sciences, Tianshui, Gansu 741001, China | | LIANG Gengsheng | Tianshui Academy of Agricultural Sciences, Tianshui, Gansu 741001, China | | WANG Fuquan | Tianshui Academy of Agricultural Sciences, Tianshui, Gansu 741001, China | | YANG Yonggang | Vegetable Research Institute, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China | | YIN Yanlan | Tianshui Academy of Agricultural Sciences, Tianshui, Gansu 741001, China | | LU Jianping | Tianshui Academy of Agricultural Sciences, Tianshui, Gansu 741001, China |
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| Abstract: |
| An experiment was carried out to study the effect of different plastic-film mulching on soil water content and water use efficiency of dryland bean (Phaseolus vulgaris L.) by using six mulching modes which were whole mulching on double ridges in autumn, whole flat mulching in autumn, half flat mulching in autumn, whole mulching on double ridges in spring, whole flat mulching in spring and half flat mulching in spring. The results showed that compared with spring's double ridges full mulching, autumn's half flat film mulching and spring's full flat mulching as well as spring's half flat mulching (CK), autumn's double ridges whole mulching and autumn's whole flat mulching increased water content of 0～100 cm soil layer by 7.62%～14.20 and 7.44%～14.02% respectively at sowing time, and before mid July water content of 0～80 cm soil layer increased by 7.39%～16.16% and 5.45%～14.06% respectively, significant differences between each other got significant (or very significant) level. The bean's yield and water use efficiency of autumn's double ridges whole mulching and autumn's full flat mulching were 19 311.11 kg/hm2 and 17 938.89 kg/hm2, 65.45 kg/(mm·hm2) and 58.71 kg/(mm·hm2), increased by 91.82% and 78.20%, 81.20% and 62.54% (P<0.01 or P<0.05) respectively compared with spring's half flat mulching. Furthermore, the growth potential and yield and water use efficiency of dryland bean were significantly improved by planting in catchment furrow of autumn's double ridges whole film mulching or in catchment hole of autumn's flat whole film mulching. |
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