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Method for freezing, thawing, loosening and ventilating deep soil in orchard

A deep soil, freeze-thaw technology, applied in the field of deep soil ploughing, can solve the problems of ploughing and ventilation, and achieve the effect of promoting gas exchange, increasing oxygen content, reducing mechanical power and artificial consumption

Inactive Publication Date: 2011-08-24
SHANDONG AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of loose plowing and aeration of deep soil, the present invention utilizes the action of soil freezing and thawing to create a method for loose plowing of deep soil in the root zone of fruit trees and rare trees

Method used

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  • Method for freezing, thawing, loosening and ventilating deep soil in orchard
  • Method for freezing, thawing, loosening and ventilating deep soil in orchard
  • Method for freezing, thawing, loosening and ventilating deep soil in orchard

Examples

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Embodiment 1

[0015] In an orchard where the soil parent material is limestone, eight "V"-shaped holes 7 were drilled on the outer edge 10 of the crown projection in late October, each hole was 8 cm in diameter and 80 cm in vertical depth; One set in the north, dig a small pit 6 on the north side of the northern opening 5, and pile the excavated soil on the south side of the opening to form a crescent-shaped mound 4 with a concave surface facing north; then pour water into each "V"-shaped hole 7 10 liters; in the following year, with the expansion of the tree canopy, the location of the "V"-shaped hole will be moved outward, and the location of the hole will be moved outward year by year, and the number of holes will be increased to gradually expand the area of ​​deep loosening of the soil.

Embodiment 2

[0017] In areas with relatively sticky soil, in early November, drill 6 "V"-shaped holes 7 on the outer edge of the crown projection of rare trees. Each hole has a diameter of 5 cm and a vertical depth of 60 cm; the two openings of the holes are 50 cm apart. cm, one south and one north, dig a small pit 6 on the north side of the northern opening 5, and the excavated soil is piled up into a crescent-shaped mound 4 with a concave surface facing north on the south side of the opening; Irrigate 5 liters of water in the hole 7; in the following year, the setting position of the "V" shaped hole will be moved outward with the expansion of the tree canopy, and the position of the hole will be moved outward year by year, and the number of holes will be increased, so that the area of ​​deep loosening of the soil will gradually expand.

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Abstract

The invention discloses a method for freezing, thawing, loosening and ventilating deep soil in an orchard. The method is characterized by comprising the following steps of: drilling 'V'-shaped holes on stick heavy soil, adding water into the holes in winter, injecting cold air by virtue of the holes, reducing the temperature to be below 0 DEG C while the cold air flows through a moist soil layer with the depth of 50-100cm, thus deep soil is frozen; and when the weather warms up in spring, warm air flows into the holes to thaw the frozen soil, thus the deep soil is loosened. In the invention, freeze thawing is utilized to substitute deep ploughing and hole enlarging to solve the loosening problem of the deep soil, mechanical motive power and labour usage are greatly reduced, serious disturbance to soil is avoided, the ventilation property of the deep soil is improved, and the cost of soil cultivation is reduced. The method disclosed by the invention is applicable to an orchard which has sticky and heavy soil texture and a cement gum layer in the soil as well as a cultivation land of rare trees.

Description

(1) Technical field [0001] The invention relates to a method for deep loosening of soil and belongs to the technical field of orchard soil cultivation. (2) Background technology [0002] Root growth and respiration require the soil to remain loose and well ventilated. However, due to trampling, mechanical compaction and the soil itself, the soil in the root zone of the fruit tree is hard, dense, and poorly ventilated. Oxygen will suffocate part of the root system and eventually slow down the growth of the fruit tree, weaken the tree and even gradually die. Therefore, it is very important to keep the soil in the root zone loose and ventilated through proper tillage, especially in the soil with heavy texture, loose tillage and Ventilation is more necessary. [0003] For the surface or shallow soil within 20 cm, it can be loosened and ventilated by hoeing, planing, rotary tillage and other farming methods, but the root system of the tree should be deeper than 20 cm. Hoeing, pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/00
Inventor 杨致瑗杨洪强接玉玲郝文强
Owner SHANDONG AGRICULTURAL UNIVERSITY
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