Water-conserving fertilizer-conserving ridging compaction-farming method for dry lands

Abstract

The invention provides a water-conserving fertilizer-conserving ridging compaction-farming method for dry lands and belongs to the technical field of agricultural water-soil engineering. The water-conserving fertilizer-conserving ridging compaction-farming method for the dry lands includes the steps of firstly, leveling and pressing soil of a fertilization zone to break continuity of large pores of the soil so as to form a compact fertilization zone; secondly, applying fertilizer to the fertilization zone, making ridges at the top of the fertilization zone, and compacting the surface of each ridge to form furrows among the ridges; and thirdly, performing planting in the furrows. Each ridge is 30cm in width and 8-10cm in height. Slope length ratio of slopes of each ridge is 1:1. Each furrow is 20cm in width. Soil density of each compacted ridge surface is controlled to be from 1.4g / cm<3> to 1.5g / cm<3>. High-density ridge soil forms a water movement barrier layer on the fertilization zone, so that rainfall collects in the furrows in a runoff manner mainly, infiltrating flow through the fertilization zone is reduced, water and fertilizer are effectively stopped from drenching and moving to deep soil effectively, rain collecting efficiency is improved, and water collection, fertilizer conservation and environmental pollution reduction are achieved.

Description

technical field [0001] The invention belongs to the technical field of agricultural water and soil engineering, and in particular relates to a ridge compaction farming method for water storage and fertilizer conservation in dry land. Background technique [0002] There are 34 million hm of arable land in dry agricultural areas in northern my country 2 , accounting for 1 / 3 of the country's cultivated land, of which 23 million hm 2 Due to the shortage of water resources, it is impossible to irrigate, and making full use of precipitation in areas with rainfall of 250-500mm is the fundamental way for sustainable agricultural development. In addition, with the improvement of agricultural intensification, excessive application of nitrogen and phosphorus fertilizers, and the growing season of summer crops coincides with the high temperature and rainy season from July to September, so the leaching of nitrogen and phosphorus is relatively serious, which not only causes waste of reso...

AI Technical Summary

Problems solved by technology

In addition, with the improvement of agricultural intensification, excessive application of nitrogen and phosphorus fertilizers, and the growth period of summer crops coincides with the high temperature and rainy season from July to September, so the leaching of nitrogen and phosphorus is relatively serious, which not only causes waste of resources, It also poses a serious threat to the groundwater and surface water environment

At present, the method of rain-collecting and water-saving farming in northern my country is mainly film-covering farming on ridges. Although the rain-collecting effect of film-covering farming on ridges is more obvious, long-term use of plastic film will form "white pollution" in the cultivated soil. Even cause negative effects such as soil compaction

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