| Study on drought-resistance of between-ridges and film-side cultivation for tobacco |
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| DOI：10.7606/j.issn.1000-7601.2008.05.14 |
| Key Words: tobacco between ridges drought-resisting cultivatio |
| Author Name | Affiliation | | ZHOU Zhongwen | Key Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province, Lanzhou Institute of Arid Meteorology, CMA, Lanzhou, Gansu 730020； Zhengning Meteorological Bureau, Zhengning, Gansu 745300, China | | LIU Ying | Huanxian Meteorological Bureau, Huanxian, Gansu 745700 | | ZHANG Yongxia | Huanxian Meteorological Bureau, Huanxian, Gansu 745700 |
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| Abstract: |
| Two different cultivation ways for tobacco, between-ridges and on-film, were conducted in the experiment to study their effects on natural precipitation use efficiency, soil temperature and moisture change, tobacco disease-resistance, agronomic characters and economic efficiency. The results indicated that the between-ridge cultivation could increase the tobacco's use of natural precipitation by 16 times compared to the conventional on-film cultivation, and it also enabled the invalid precipitation below 10 mm to become effective, guaranteeing tobacco's demand for water in the critical period. In addition, this cultivation could increase the 0～50 cm soil moisture by 15%, enhance the proportion of medium and top grades of tobacco leaf by 23.6%, increase yield by 921 kg·hm-2, raise the out-put value by 8 871 Yuan/hm-2. In brief, the new cultivation technology of between-ridge and film-side is superior to the conventional on-film way in resisting drought, anti-disease, increasing soil moisture and temperature, enhancing the output value, reducing residual quantity of plastic film in soil, and so on. It is especially suitable for the warm cool semi-moist and semi-arid regions and has a broad prosopect to be extended. |
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