| 宁夏稻蟹共生耦合系统浮游植物的群落结构 |
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| 引用本文： | 顾芸,李奎,陈立婧,沈玺钦,石伟,管卫兵.宁夏稻蟹共生耦合系统浮游植物的群落结构[J].上海海洋大学学报,2022,31(2):411-420. |
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| 作者姓名： | 顾芸 李奎 陈立婧 沈玺钦 石伟 管卫兵 |
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| 作者单位： | 上海海洋大学,上海海洋大学,上海海洋大学,上海海洋大学,银川市科海渔业生物技术有限公司,上海海洋大学 |
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| 摘 要： | 通过对宁夏银川市贺兰县四十里店村稻蟹共生耦合系统浮游植物的研究，分析该模式下稻田与不同水体循环运作中稻田进水口、稻田中间、稻田出水口的浮游植物及环境因子。水稻品种为秋优88号，蟹品种为中华绒螯蟹，实验选择4个（3、6、7、10号田）灌溉鱼塘尾水稻田（试验组）和1个（8号田）灌溉黄河水稻田（对照组），结果表明：试验组共鉴定出浮游植物8门235种，其中3号田鉴定出8门153种，6号田鉴定出8门147种，7号田鉴定出7门143种，10号田鉴定出8门159种。对照组共鉴定出浮游植物7门127种。试验组平均密度高于对照组（P＜0.05）；试验组优势种13种，对照组优势种9种，均以蓝藻为主。灌溉鱼塘尾水稻蟹田多样性指数高于灌溉黄河水稻蟹田，表明灌溉鱼塘尾水稻蟹田浮游植物群落结构更加完善与稳定。试验组磷酸盐、总碱度、盐度、pH与对照组无显著差异（P＞0.05），水温、溶氧、亚硝酸盐、氨氮显著低于对照组（P＜0.05）。RDA分析表明，pH、透明度、水温是影响浮游植物群落结构的主要环境因子。
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| 关 键 词： | 稻蟹共生、耦合模式、浮游植物、环境因子、冗余分析 |
| 收稿时间： | 2021/2/22 0:00:00 |
| 修稿时间： | 2021/5/28 0:00:00 |
Phytoplankton community structure of rice-crab culture of integrated system in Ningxia |
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| GU Yun,LI Kui,CHEN Lijing,SHEN Xiqin,SHI Wei,GUAN Weibing.Phytoplankton community structure of rice-crab culture of integrated system in Ningxia[J].Journal of Shanghai Ocean University,2022,31(2):411-420. |
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| Authors: | GU Yun LI Kui CHEN Lijing SHEN Xiqin SHI Wei GUAN Weibing |
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| Institution: | Shanghai Ocean University,Shanghai Ocean University,Shanghai Ocean University,Shanghai Ocean University,Yinchuan Kehai fishery Biotechnology Co., Ltd,Shanghai Ocean University |
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| Abstract: | The study was based on the rice-crab culture of integrated system to analyze phytoplankton and environmental factors at the water inlet, middle and outlet of paddies in the village of Helan, Ningxia. The rice species was Qiuyou 88, and the crab variety was Eriocheir sinensis. In the experiment, four paddies (paddy 3, 6, 7 and 10) were irrigated with fish pond tail water (experimental group) and one paddy (paddy 8) was irrigated with water from Yellow River (control group).The results showed that A total of 235 phytoplankton species were identified from 8 phyla throughout four periods in experiment group,among which 153 species from 8 phyla in paddy 3, 147 species from 8 phyla in paddy 6, 143 species from 7 phyla in paddy 7 and 159 species from 8 phyla in paddy 10. A total of 127 species from 7 phyla were identified in the control group. The average density of the experimental group was higher than that of the control group (P<0.05); A total of 13 dominant species were found in the experimental group and 9 dominant species were found in the control group, all of which were dominated by Cyanobacteria. The diversity index of paddy irrigated fish pond tail water was higher than that irrigated Yellow River water, which indicated that the phytoplankton community structure of the paddy irrigated fish pond was more perfect and stable. There was no significant difference in total alkalinity and salinity between the experimental group and the control group (P>0.05), but there was significant difference in transparency, water temperature, phosphate, pH,dissolved oxygen, nitrite and ammonia nitrogen between the experimental group and the control group (P<0.05).The RDA analysis showed that pH, transparency(SD)and water temperature(WT)were identified as the main factors affecting the changes in phytoplankton community. |
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| Keywords: | Rice-crab culture integrated system phytoplankton environment factors redundancy analysis |
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