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Knot-ridging, furrowing, rain-collecting and planting method for semi-arid gentle-slope land

A planting method and semi-arid technology, applied in the field of ridges and furrows to collect rain, can solve the problems of soil nutrient and water loss, and achieve the effect of improving fertilizer use efficiency, increasing utilization rate, and reducing nutrients

Inactive Publication Date: 2017-10-13
GANSU AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to avoid the defects of the prior art, and propose a method for planting knotted ridges and furrows on gentle slopes in semi-arid areas to collect rain. Rain harvesting planting causes problems such as soil nutrient and water loss

Method used

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  • Knot-ridging, furrowing, rain-collecting and planting method for semi-arid gentle-slope land
  • Knot-ridging, furrowing, rain-collecting and planting method for semi-arid gentle-slope land

Examples

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Effect test

Embodiment 1

[0040] Embodiment 1: A method of planting knotted ridges and ditches for rain collection on gentle slopes in semi-arid areas, the steps are as follows:

[0041] (1) Build ridges and make ditches: Build rain-collecting ridges with in-situ soil along the contour line on gentle slopes (5°-20°). The bottom width is 35-40cm, the angle between the ridge surface and the ditch surface on the rain-collecting ridge is about 5°-10°, and the angle between the ridge surface and the ditch surface under the rain-collecting ridge is about 50°-60°; two adjacent rain-collecting ridges Between the feet of the ridges is a ditch with a width of 60cm and a slope of about 0°; the best time to build a ridge is from March 10th to April 20th;

[0042] (2) Fertilization: superphosphate 350-420kg hm -2 and urea 220-300kg hm -2 As a base fertilizer, mix the two kinds of fertilizers on the soil surface in the ditch before sowing, and then turn them into the soil at a depth of 20-30cm; do not mix crop see...

Embodiment 2

[0056] Embodiment 2: The steps are the same as in Example 1, except that in step (3), the rain-collecting ridge is covered with a biodegradable plastic film; the pulling force of the biodegradable plastic film covering is 1 / 6-1 / 8 of the pulling force of a common plastic film; The height of the biodegradable plastic film from the ground is 3-5mm; the biodegradable plastic film is covered 7 days before sowing; the depth of the biodegradable plastic film buried in the soil at the side of the ridge is 5-10cm, and the depth of the biodegradable plastic film is larger than that of the ordinary plastic film. Depth; if the biodegradable mulch is covered too early, it is easy to degrade and lose water retention in the late growth period of crops or pastures; if the biodegradable mulch is covered too late, it is easy to lose soil moisture, which is not conducive to the germination and emergence of crops or pastures; steps In (4), for drill crops, the sowing rates of alfalfa, oats and spr...

Embodiment 3

[0057] Embodiment 3: The steps are the same as in Example 1, the difference is that in step (3), the rain-collecting ridge is covered with liquid plastic film, and before the liquid plastic film is sprayed, the powdery liquid plastic film is mixed with water at a ratio of 1:15, and the mixed solution Stir for 5-10 minutes. After the powdery liquid film is fully dissolved, spray the mixture evenly on the surface of the rain-collecting ridge with a sprayer. The spraying amount of the powdery liquid film is 90kghm -2 , the mixed solution application rate is 1440kg hm -2 ; In my country's semi-arid areas, the service life of liquid mulch is about 2 months, and the spraying time of liquid mulch is in late April and late June; The distance between the ridge feet is 3.5-4.0m;

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Abstract

The invention discloses a knot-ridging, furrowing, rain-collecting and planting method for a semi-arid gentle-slope land; the method comprises the steps of ridging and furrowing, fertilizing, covering rain-collecting ridges, seeding, building knot-ridges in furrows, managing a field, harvesting, and maintaining after harvesting. By using the method, soil water content and crop yield can be increased, land temperature can be increased, mineral nutrient content of an arable layer can be increased, fertilizer utilization efficiency can be improved, physical characteristics of soil can be improved, soil porosity is increased by 1-10%, unit weight is decreased by 0.02-0.3 g / cm<-3>, and soil aggregate structure is increased by 1.5%.

Description

technical field [0001] The invention mainly relates to a method for planting ridges and furrows for collecting rain, in particular to a method for planting ridges and furrows for collecting rain on gentle slopes in semi-arid areas. Background technique [0002] The hilly area of ​​the semi-arid Loess Plateau has the characteristics of shortage of precipitation resources, low vegetation coverage, shallow soil fertility layer, vertical and horizontal terrain gullies, serious soil erosion, and fragile ecology. Drought and soil erosion are the main factors restricting food safety production and economic development in this area. Factors (Li XY, Xie Z, Yan X, et al. Runoff characteristics of artificial materials for rainwater harvesting in the semiarid regions of China [J]. Agriculture Water Management, 2004, 65: 211-224.). This area is dominated by hilly land, the proportion of slope cultivated land to the total cultivated land is 60%-70%, and the proportion of slope farmland so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A01G13/02A01B79/00
CPCA01B79/00A01G13/0275Y02A40/22Y02A40/28Y02P60/20
Inventor 王琦刘青林李富春张登奎张恩和
Owner GANSU AGRI UNIV
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