Reservoir gentle slope regression zone land limited cultivation utilization method

Abstract

The invention discloses a reservoir gentle slope regression zone land limited cultivation utilization method, which comprises the following steps of: a, selecting a regression zone land with a gentle slope and a thick soil layer in a period of reservoir level drop and in crop-planting seasons; b, determining sowing points of crops at certain intervals according to the growth requirement of crops intended to be planted, performing land preparation and loosening the soil at each sowing point, and keeping an original state in other places; c, dibbling the crops at each point after land preparation so as to form coexistence between the crops and plants; and d, after the crops are maturely harvested, keeping the original vegetation in the land. By combining farming rules of farmers, the method is easy and convenient to operate and convenient to implement, the destructiveness of the conventional common ploughing mode on soil can be effectively reduced, and the potential original vegetation in the regression zone is preserved; therefore, soil erosion on a soil reservoir bank of the regression zone is reduced.

Description

technical field [0001] The invention belongs to the technical field of eco-friendly utilization of land in a water-fluctuation zone of a reservoir, and in particular relates to a method for seasonally limited agricultural cultivation and utilization of soil banks in a gentle-slope water-fluctuation zone of a reservoir. Background technique [0002] The water-fluctuation zone is a special product formed by the construction and operation of the reservoir. The impoundment operation of the Three Gorges Project on the Yangtze River in my country will form a water-fluctuation zone with a water level fluctuation of 30m, a length of 600 kilometers, and an area of ​​348.93 square kilometers. The water-fluctuation zone of the Three Gorges Reservoir except the area east of Fengjie is a hard rock canyon-type river section, the river bank is Zhongshan Mountain, the bank slope is steep and mainly rocky reservoir bank, and the water-fluctuation zone to the west of Fengjie is mainly the orig...

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Problems solved by technology

At present, the land resources in the water-fluctuation zone are mainly developed and utilized by farmers spontaneously, and the land exposed to the water surface during the land-forming period of the water-fluctuation zone is cultivated. However, traditional agricultural farming measures are not applicable to the agricultural use of land in the water-fluctuation zone of the reservoir, which will make the surface ( The soil in the alluvium layer) becomes loose, and its soil erosion may be intensified during the rainy season (just when the hydrofluctuation zone is forming land), and the next water level fluctuation cycle is also vulnerable to wave erosion; land development in some areas is still Affect the stability of the banks of the reservoir; the pesticides and fertilizers used at the same time produce non-point source pollution along with the runoff and sediment loss, which deteriorates the water quality of the reservoir area and threatens the ecological security of the reservoir area

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