| 稻鸭鱼种养模式的生态效应研究 |
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| 引用本文： | 郑钦玉 李登国. 稻鸭鱼种养模式的生态效应研究[J]. 西南大学学报(自然科学版), 1994, 16(4): 373-375 |
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| 作者姓名： | 郑钦玉 李登国 |
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| 作者单位： | 西南农业大学农学系,西南农业大学农学系,西南农业大学农学系,西南农业大学农学系,巴县农业局 重庆 630716,重庆 630716,重庆 630716,重庆 630716,重庆 631320 |
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| 摘 要： | 对稻、鱼鸭种养模式的生态效益研究表明,稻十鸭十鱼田0cm～20cm土层温度升高,土壤昼夜温差增大,土壤有机质、全氮、磷、钾分别增加25.7％,25.8％, 39.2％,5.4％,速效N,P_2O_5,K_2O养分增大;水稻植株虫口量减少,病害轻。可增收鲜鱼1912.5kg/hm~2, 成鸭440.3kg/hm~2,水稻产量增加11.1％,生态指数EI—0.8542,属良性循环。
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| 关 键 词： | 水稻 鸭 鱼类 生态效应 生态农业 |
STUDIES ON ECOLOGICAL EFFECTS OF A SPACE PLANTING AND FEEDING MODEL (RICE+FISH+DUCK) IN PADDY FIELD |
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| Zheng Qinyu,Wang Guangming,Zhu Zijun,Li Xingping. STUDIES ON ECOLOGICAL EFFECTS OF A SPACE PLANTING AND FEEDING MODEL (RICE+FISH+DUCK) IN PADDY FIELD[J]. Journal of southwest university (Natural science edition), 1994, 16(4): 373-375 |
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| Authors: | Zheng Qinyu Wang Guangming Zhu Zijun Li Xingping |
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| Abstract: | The ecological effects of traditional planting was compared with those of a space planting and feeding model in winter paddy field in Chongqing. The results showed that in the "rice + fish + duck " model, the soil temperature at the 0~20 cm layer, diurnal variation of temperature, and readily available N, P and K were raised, and total N, P and K and organic matter in soil were shown to increase by 25. 8,39. 2,5. 4 and 25. 7%,respectively. Insect population decreased and incidence of diseases dropped. As a result, the average grain yield increased by 11. 1%and 1912. 5 kg/hm2 of fish and 440. 3 kg/hm2 of duck were obtained, with an ecological index(EI)of o. 8547. A beneficent cycle was realized. |
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| Keywords: | paddy ducks fishes rice soils ecological effect/paddy field |
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