Experimental study on rice-fish culture in low-lying saline-alkali land of Ningxia

doi:10.14088/j.cnki.issn0439-8114.2021.03.003

Abstract

Abstract: The experimental study on rice-fishing culture was carried out in 2018 to explore the effect and model of rice-fishing culture in low-lying saline-alkali land in Ningxia.Three treatments were set up in the experiments which named rice-crab （larva larva）, rice-fish （carp） and ordinary rice fields（control group）. The agronomic characters and soil pH were determined to discusse the effects of rice-fishing culture from the aspects of rice growth, development and yield in low-lying saline-alkali land.The results showed that the yield of rice with rice-crab and rice-fish culture increased by 3.9% and 6.1% respectively. The number of tillers in rice could be increased by rice-fishing culture.The leaf area of parietal trifoliate of rice was increased and the photosynthetic productivity of rice was improved obviously by rice-fishing culture. The dry matter quality of rice of rice-fishing culture was higher than that of conventional rice in jointing to panicle stage, which could promote the accumulation of dry matter in the overground of rice in each growing period, and thus promote the yield of rice. Compared with conventional rice cultivation, rice-fishing culture can reduce the pH of low-lying saline-alkaline land, which is beneficial to the growth and development of rice.

Key words: low-lying saline-alkaline land, rice-fishing culture, growth, yield, Ningxia

CLC Number:

S156.4⁺5

SHI Wei, YANG Juan, YANG Ling-xia, QIU Xiao-cong. Experimental study on rice-fish culture in low-lying saline-alkali land of Ningxia[J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(3): 18-21.

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