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稻田 1

综合种养 1

虾–稻共作 1

鳖–虾–鱼–稻共作 1

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稻渔综合种养及其发展建议

马达文,钱静,刘家寿,桂建芳

《中国工程科学》 2016年第18卷第3期页码 96-100 doi: 10.15302/J-SSCAE-2016.03.016

摘要：

稻田养鱼是一种传统的综合养鱼方式。近几年来，一批以特种经济品种为主导的稻渔综合种养新模式不断涌现，在经济、社会、生态等方面取得显著的成效。为了推广稻渔综合种养的经验，本文实地调研了湖北省两种典型的稻渔综合种养模式，其中“虾–稻共作”模式亩均纯收入超过3 000元，亩纯收入则是单纯种粮的3~4倍；“鳖–虾–鱼–稻共作”模式亩均纯收入近万元，是单一种植水稻亩均效益的12.8倍。本文还提出了加快产业发展的建议,包括进一步拓展种养殖空间、促进产业融合发展及加大政策扶持力度等。

关键词：稻田综合种养虾–稻共作鳖–虾–鱼–稻共作

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Antibacterial properties of extracts of

Manhong YE,Lei ZHANG,Jiaqi GE,Haifeng SUN,Jingjing NI,Shengmei YANG,Wanhong WEI

《农业科学与工程前沿（英文）》 2015年第2卷第4期页码 327-334 doi: 10.15302/J-FASE-2015078

摘要： Canadian goldenrod ( ) is one of the most destructive invasive weeds in South-eastern China. To evaluate its potential application as dietary supplement in red swamp crayfish ( ), the antibacterial properties of aqueous and ethanol extracts of this plant against three major pathogenic bacteria in crayfish aquaculture were examined. Inhibition zone tests and determination of minimum inhibitory concentration revealed that the extracts had lower antibacterial activity than extracts from two traditional medicinal plants that possess antibacterial properties, garlic ( ) and cortex phellodendri ( ). However, they did exhibit greater antibacterial effects than extracts from another widely used medicinal plant, , and an aquatic weed, . Aqueous extracts of Canadian goldenrod gave greater inhibition than the ethanol extracts. Crayfish fed a diet with 2% these aqueous extracts exhibited significantly higher enzyme activity of alkaline phosphatase, catalase and phenoloxidase ( <0.05). Based on the results of this study, we conclude that aqueous extracts of Canadian goldenrod are highly promising for the development of new dietary supplement for use in crayfish aquaculture.

关键词： antibacterial activity Canadian goldenrod antioxidant enzyme crayfish