Journal of Food, Agriculture and Environment

The effects of different transplanting ways on the phytoplankton community in rice-crab culture system

Author(s):

Qingyang Zhang ^{1, 2, 3}, Dongfeng Lv ⁴, Xuzhou Ma ^{1, 2, 3*}, Ang Wang ^{1, 2, 3}, Wentong Sun ^{1, 2, 3}, Wu Wang ^{1, 2, 3}

Recieved Date: 2013-09-10, Accepted Date: 2014-01-08

Abstract:

During the tilling, tillering, jointing, flowering and filling stages in 2012, a study was carried out on community of algae in water environment of ricecrab culture model. There were three parallel groups in each treatment. The results showed that the planktonic algae collected from the paddy field were a total of 59 species belonging to 8 phyla and 27 genera, after being identified. In elongation stage, the average densities of phytoplankton in crabculturing paddy fields were observably higher than that of CK and rice-crab culture system also had difference (SC>DC>CK, SC>FC>CK, p<0.01). At the elongation stage, the average biomass of SC and DC were observably higher than that of CK and FC (P<0.05). In the whole sampling period, the Margalef index (d) of SC, DC and FC were always higher than that of KC, but the difference was not significant (p>0.05). At the initial experiment stage, the Shannon-Wiener index of different treatments reached their minimum values and reached their maximum value at maturing stage. The output of juvenile crabs of SC was highest (SC>DC and FC, p<0.01).

Keywords:

Eriocheir sinensis, different transplanting way, rice-crab culture, phytoplankton community, diversity index

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Journal: Journal of Food, Agriculture and Environment
Year: 2014
Volume: 12
Issue: 1
Category: Agriculture
Pages: 199-204

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