Chinese herbal medicine crop-rotation planting mode for pond water quality purification

Abstract

The invention provides a Chinese herbal medicine crop-rotation planting mode for pond water quality purification. The Chinese herbal medicine crop-rotation planting mode comprises the following steps that a PVC pipe material is selected to manufacture floating beds, wherein the specification of each floating bed is 2m * 2m; the two surfaces of each floating bed are wrapped by mesh pieces which have 30 mm of meshes and are convenient for seedling cuttage; and before a test is started, water spinach, houttuynia cordata, mentha haplocalyx and water dropwort seedlings which are cultivated in advance are subjected to cuttage according to the plant row spacing of 30 cm * 20 cm, and floating beds are fixed in the pond in a concentrated mode and arranged in order. According to the Chinese herbal medicine crop-rotation planting mode for pond water quality purification, mentha haplocalyx has the advantage of reducing indexes such as TN, NH3-N, NO<3->-N and NO<2->-N compared with houttuynia cordata, and the effect of reducing TP is relatively good. The 'mint-cress' crop-rotation mode is superior to the 'water spinach-cress' mode in the aspect of reducing TP and PO4 < 3->-P in the water body, and has a relatively good effect on reducing TN of a substrate. Therefore, the 'Chinese herbal medicine / water spinach-cress' crop-rotation mode can significantly reduce the measured indexes of the water / substrate of the aquaculture pond, and can be popularized and applied in a small range.

Description

technical field [0001] The invention relates to the technical field of water quality purification, in particular to a Chinese herbal medicine rotation planting method for pond water quality purification. Background technique [0002] The results of the study showed that the "water spinach-cress" crop rotation pattern in the early stage (water spinach planting stage) could significantly reduce TOC, Chl.a, NH 3 -N, NO 3 - -N, NO 2 - -N content, the later stage of crop rotation (cress planting stage) can significantly reduce TOC and NO in water 3 - -N, TP content. The content of TOC, TN, and TP in the substrate of different cultured varieties can be reduced before and after the crop rotation, which is comparable to the water purification results of planting Chinese herbal medicines alone (Houttuynia cordata, Polygonum cuspidatum, "Houttuynia cordata-Spinach-Houttuynia cordata" sandwich model) unanimous. Water spinach, Houttuynia cordata, mint, knotweed, etc. are suitabl...

AI Technical Summary

Problems solved by technology

At present, there are few basic studies on pond rotation. This experiment aims to detect whether the "Chinese herbal medicine / water spinach-cress" rotation model can reduce the water quality in the pond and the concentration of nutrients in the bottom environment, and explore whether it can improve the aging phenomenon of the pond. to improve water quality

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