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Agricultural and fishery comprehensive utilization method of rice field-pond for coastal saline-alkali land

A technology for saline-alkali land and paddy field, which is applied in the field of agricultural breeding and treatment, can solve the problems of saline-alkali water restricting saline-alkali land, lack, and low yield of rice field crop pond culture, achieve good economic benefits, improve the environment, and improve the utilization rate of saline-alkali land resources.

Inactive Publication Date: 2018-09-07
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, on the one hand, it is necessary to wash the salt in the soil, and on the other hand, it is necessary to control the groundwater level to prevent the soil from returning to salt due to the rise of the groundwater level. The long-term effect of transformation has led to slow progress in the improvement of saline-alkali land, with little effect, and the outlet of saline-alkali water has become a bottleneck restricting the improvement of saline-alkali land
[0003] In the existing technology, although the improvement method of saline-alkali land provides a certain basis for the early improvement of saline-alkali land, it lacks specific technical measures, especially for the lack of further technical measures for the later utilization of terraced fields and ponds after the early improvement, and salt return often occurs. Alkali phenomenon, paddy field crop cultivation and pond culture yield are low, it is difficult to promote and use for a long time

Method used

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  • Agricultural and fishery comprehensive utilization method of rice field-pond for coastal saline-alkali land

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Experimental program
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Effect test

Embodiment approach

[0019] First, according to the particle size structure of saline-alkali water soil and the climatic characteristics of precipitation, light, temperature, etc., a comprehensive fishery and agriculture breeding area consisting of water inlet canal-paddy field-drainage canal-reservoir-pond is constructed. The water flow direction is the water inlet canal, For paddy fields, drains, reservoirs and ponds, the influent salinity is less than 1.0, the pH is less than 8.0, and the soil salinity of the plow layer is less than 50g / kg.

[0020] Deep plow the soil in the autumn and winter idle seasons, quickly change the vertical distribution of soil salinity, bury the topsoil with high salt content to the bottom layer, turn up the good soil at the bottom layer, and apply organic fertilizers to establish a new tillage layer. Deep plow 45-50cm for saline-alkali land with thicker saline-alkali layer; 30-45cm deep-plow for saline-alkali land with moderate saline-alkali layer; Base fertilizer a...

Embodiment 1

[0024] Example 1 Soil washing salt and alkali discharge and water catchment test

[0025] According to the particle size structure of saline-alkali water soil and the climatic characteristics of precipitation, light, temperature, etc., a comprehensive fishery and agriculture model consisting of intake canal-rice field-drainage canal-reservoir-pond is constructed. The water flow direction is the intake canal, rice field, drainage For canals, reservoirs and ponds, the influent salinity is less than 1.0, the pH is less than 8.0, and the salinity of the plow layer soil is less than 50g / kg. Deep plow the soil in the autumn and winter idle seasons, quickly change the vertical distribution of soil salinity, bury the topsoil with high salt content to the bottom layer, turn up the good soil at the bottom layer, and apply organic fertilizers to establish a new tillage layer. Deep plow 45-50cm for saline-alkali land with thicker saline-alkali layer; deep-plow 20-30cm for saline-alkali la...

Embodiment 2

[0028] Embodiment 2 rice cultivation test

[0029]The salt-tolerant rice variety Yanfeng 47 was selected and planted according to the planting row spacing of 20 cm, hole spacing of 10 cm, 3 to 5 plants per hole, and 16,000 to 18,000 seedling holes per mu. Among them, the soil lacks nitrogen and phosphorus, and depending on the condition of the seedlings during the growth period, the method of soil testing and fertilization should be used to fertilize once for turning green, tillering, and heading. Fertilize in the evening, and replenish water immediately on the third day to improve fertilizer efficiency. Surface water can only be drained 7 days after fertilization to avoid fertilizer loss; during rice planting, do not dehydrate during the day to prevent salt from rising with water evaporation. The rice yield per mu planted according to the above method reaches more than 500 kg / mu.

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Abstract

The invention discloses an agricultural and fishery comprehensive utilization method of rice field-pond for a coastal saline-alkali land. The method includes the following steps: laying out an agricultural and fishery comprehensive planting and breeding area for the rice field-pond in the coastal saline-alkali land, wherein according to the flow direction, the area comprises intake channels, ricefield, drains, reservoirs and ponds successively; and then after plowing, salt washing and topdressing, conducting rice cultivation and aquaculture. The method combines fisheries and planting with management and cultivation of the saline-alkali land; the soil salinity falls by 65%-85% from 13.7 g / kg to 2.0-4.8 g / kg, reaching the standard of crop planting; rice yield per mu reaches 500 kg / mu or more; the yield of whiteleg shrimps reaches 240 kg or above; and the method solves the outlet problem for saline-alkali water during saline-alkali land management, improves resource utilization of the saline-alkali land, and in the meantime produces good economic benefits.

Description

technical field [0001] The invention belongs to the technical field of agricultural breeding and management, and relates to a comprehensive fishery and agriculture treatment method suitable for saline-alkali land, in particular to a coastal saline-alkali land paddy field-pond comprehensive fishery and agriculture utilization method. Background technique [0002] For a long time, the improvement of saline-alkali soil has mostly adopted a comprehensive treatment method centered on water and fertilizer. Using engineering drainage to wash salt is one of the important improvement technical measures. In recent years, "directional migration of soil water and salt" has been proposed. However, on the one hand, it is necessary to wash the salt in the soil, and on the other hand, it is necessary to control the groundwater level to prevent the soil from returning to salt due to the rise of the groundwater level. The long-term effect of transformation has led to slow progress in the impr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G22/22A01K61/59A01K61/10A01K61/54
CPCA01G22/22A01K61/10A01K61/54A01K61/59Y02A40/81
Inventor 么宗利来琦芳周凯苏文清高鹏程
Owner EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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