| Effect of nutrient management on the growth and yield of double cropping late rice under drought stress during tillering stage |
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| DOI：10.7606/j.issn.1000-7601.2017.03.02 |
| Key Words: double cropping late rice drought stress nutrient management growth and development yield |
| Author Name | Affiliation | | GUAN Xian-jiao | Soil Fertilizer & Resource and Environment Research Institute, Jiangxi Academy of Agricultural Science/Key Laboratory of Crop Eco-physiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture, P. R. China /National Engineering and Technology Research Center for Red Soil Improvement, Nanchang, Jiangxi, 330200, China | | PENG Chun-rui | Soil Fertilizer & Resource and Environment Research Institute, Jiangxi Academy of Agricultural Science/Key Laboratory of Crop Eco-physiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture, P. R. China /National Engineering and Technology Research Center for Red Soil Improvement, Nanchang, Jiangxi, 330200, China | | CHEN Xian-mao | Soil Fertilizer & Resource and Environment Research Institute, Jiangxi Academy of Agricultural Science/Key Laboratory of Crop Eco-physiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture, P. R. China /National Engineering and Technology Research Center for Red Soil Improvement, Nanchang, Jiangxi, 330200, China | | CHEN Jin | Soil Fertilizer & Resource and Environment Research Institute, Jiangxi Academy of Agricultural Science/Key Laboratory of Crop Eco-physiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture, P. R. China /National Engineering and Technology Research Center for Red Soil Improvement, Nanchang, Jiangxi, 330200, China | | QIU Cai-fei | Soil Fertilizer & Resource and Environment Research Institute, Jiangxi Academy of Agricultural Science/Key Laboratory of Crop Eco-physiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture, P. R. China /National Engineering and Technology Research Center for Red Soil Improvement, Nanchang, Jiangxi, 330200, China | | QIAN Yin-fei | Soil Fertilizer & Resource and Environment Research Institute, Jiangxi Academy of Agricultural Science/Key Laboratory of Crop Eco-physiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture, P. R. China /National Engineering and Technology Research Center for Red Soil Improvement, Nanchang, Jiangxi, 330200, China | | SHAO Cai-hong | Soil Fertilizer & Resource and Environment Research Institute, Jiangxi Academy of Agricultural Science/Key Laboratory of Crop Eco-physiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture, P. R. China /National Engineering and Technology Research Center for Red Soil Improvement, Nanchang, Jiangxi, 330200, China | | DENG Guo-qiang | Soil Fertilizer & Resource and Environment Research Institute, Jiangxi Academy of Agricultural Science/Key Laboratory of Crop Eco-physiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture, P. R. China /National Engineering and Technology Research Center for Red Soil Improvement, Nanchang, Jiangxi, 330200, China | | XIE Jiang | Soil Fertilizer & Resource and Environment Research Institute, Jiangxi Academy of Agricultural Science/Key Laboratory of Crop Eco-physiology and Farming System for the Middle and Lower Reaches of the Yangtze River, Ministry of Agriculture, P. R. China /National Engineering and Technology Research Center for Red Soil Improvement, Nanchang, Jiangxi, 330200, China |
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| Abstract: |
| In order to promote rice production in the harsh environments of mountain and hills areas, we conducted five nutrient management methods including adding K fertilizer＋spraying clean water(T1), foliage spraying 0.2% ZnSO4(T2), adding K fertilizer＋foliage spraying 0.2% ZnSO4(T3), raising the ratio of N fertilizer in elongation stage＋spraying clean water(T4), conventional fertilization＋spraying clean water (CK), with the objective of elucidating the effect of the nutrient management methods on the growth and development, yield components and yield of double cropping late rice under drought stress condition. The results revealed significant difference among the five nutrient management methods on the growth and development and yield of double cropping late rice under drought stress condition during tillering stage, with the order of T3＞T1＞T2＞T4＞CK. T3 effectively increased tiller number, the seedling peak value, and number of effective tillers, significantly elevated the SPAD value, the photosynthetic rate and transpiration rate of leaf, root activity at elongation stage and full heading stage, with a range of increase by 2.19%～25.22% compared with CK. In addition, it significantly increased single plant dry matter weight above ground at stem elongation stage and full heading stage and maturity stage, improving the dry matter accumulation of plant by 5.47% and 8.05% and 7.22% compared with CK, respectively. Furthermore, the yield components including the effective panicles number per hectare, filled grain number per panicle, total grain number per panicle and seed setting rate were significantly enhanced. Finally, the highest yield level was achieved for T3 under drought stress, reaching 10.07 t·hm-2 and being 6.34%, 7.70%, 14.17% and 25.56% higher than T1, T2, T4, and CK respectively. |
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