Abstract: In order to explore the e

Abstract: In order to explore the effect of mixed cultivation of water-saving Lotus root and aquaculture on the growth，development and quality of Lotus Root，the experiment was conducted with‘e Lian 5’Lotus rhizome，design lotus-loach，lotus-crawfish，lotus-carp，lotus-hairy Crab，control (single species Lotus rhizome)5 treatment，using field test method，the effects of different ecological planting and breeding modes of lotus-fishery on the growth，development，product commodity，nutrition quality and economic benefit of Lotus were studied。The results showed that the lotus-fish model was beneficial to the growth and development of Lotus rhizome and the improvement of nutritional quality。The quality of the whole Lotus root，the main lotus root and the maximum node were 1.58 kg，1.39 kg and 423g，respectively，which were 29.5，36.3 and 6.2 percentage points higher than that of the control The content of crude protein，starch，reducing sugar，crude fiber and vitamin C in Lotus root tubers treated with T1 was higher than that of other treatments and controls，the total amino acid content of Lotus root treated with T1 was lower than that of the other treatments and higher than that of the control，while the nitrate content of Lotus root treated with T1 was lower than that of the other treatments and the control，the yield of Lotus root was increased by 64000 yuan hm-2 and 97180 yuan hm-2 compared with the control。Although the treatments of T2 and T4 had a great damage to the young buds，they also had a certain effect on the yield of Lotus root。However，the value of the aquatic products of these two treatments was higher，which made up for the loss of the yield of Lotus root，the yield-increasing benefit of T3 treatment was the smallest，but 31940 yuan hm-2 was increased。The results showed that the T1 treatment was the best one among the water-saving lotus-fish co-cropping Patterns in Sandy Land，and it was worth popularizing and applying in large area。