| Effect of limited irrigation on the yield formation of transgenic pest-resistant cotton |
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| DOI：10.7606/j.issn.1000-7601.2004.04.12 |
| Key Words: transgenic inset-resistant cotton limited irrigation yield formation efficiency of irrigation |
| Author Name | Affiliation | | LIU Sheng-rong | Institute of Cotton,College of Agronomy,Northwest Sci-Tech University of Agriculture and Forestry,Yangling Shaanxi 712100,China | | LIU Dang-pei | Institute of Cotton,College of Agronomy,Northwest Sci-Tech University of Agriculture and Forestry,Yangling Shaanxi 712100,China | | YI Yonghua | Institute of Cotton,College of Agronomy,Northwest Sci-Tech University of Agriculture and Forestry,Yangling Shaanxi 712100,China | | JIA Tao | Institute of Cotton,College of Agronomy,Northwest Sci-Tech University of Agriculture and Forestry,Yangling Shaanxi 712100,China |
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| Abstract: |
| With the method of limited irrigation in treatments: no irrigation (A, CK), irrigation at 337.5 m3/hm2(B), irrigation at 675 m3/hm2(C) and irrigation at 1 350 m3/hm2(D), the effect of the irrigation on the yield formation of transgenic pest-resistant cotton was studied. The results indicated that the amount of dry matter per plant in seed increased by 23.4%61.9%, the lint yield increased by 16.8%～45.3% compared with those of the control, both boll number and weight increased, and boll quality improved. The optium amount water was 675 m3/hm2in each irrigation, which could make the effect of irrigation attain 0.57 kg/m3, but when it was raised to 1 350 m3/hm2the effect of irrigation reduced to 0.21 kg/m3. The key to increase the yield was the increased boll numbers both in suitable seasons for cotton growth and at advantageous node of cotton plant. |
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