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Method for improving desertified land by combining biochemical material and economic crop planting

A commercial crop and biochemical technology, applied in the fields of water and soil conservation and agricultural planting, to achieve significant water and fertilizer retention, good growth environment, and remarkable effects

Active Publication Date: 2020-05-15
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of engineering methods has many limitations in terms of cost, timeliness, and construction, while the chemical method using polymer materials has the advantages of simple construction, low cost, and quick results.

Method used

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  • Method for improving desertified land by combining biochemical material and economic crop planting
  • Method for improving desertified land by combining biochemical material and economic crop planting
  • Method for improving desertified land by combining biochemical material and economic crop planting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1. Improvement of desertified land by modified cellulose and leguminous nitrogen-fixing plants

[0022] (1) Under the catalysis of concentrated sulfuric acid, sodium carboxymethyl cellulose and glycerol were reacted at 140°C for 12 hours at a molar ratio of 1:3 to obtain hydroxylated sodium carboxymethyl cellulose; Cellulose sodium (0.5wt% of mixed soil) and mixed soil (mass ratio of red soil to loess is 1:2), wheat straw powder (5 wt% of mixed soil), decomposed sheep in anaerobic environment at 70 °C Manure (mixed soil 10 wt%) was mixed and stirred evenly to obtain the desertification land improvement material;

[0023] (2) Sprinkle diamine phosphate 12kg / mu on the surface of the land to be improved, spread the desertification land improvement materials on the ground, and use a rotary tiller to till. Sow the seeds of leguminous plants on the ground after rotary tillage, irrigate and keep the soil moist to ensure seed germination, emergence and growth, and s...

Embodiment 2

[0026] Embodiment 2. Improvement of desertified land by modified cellulose and non-legume nitrogen-fixing plants

[0027] (1) Under the catalysis of concentrated sulfuric acid, sodium hydroxymethyl cellulose and oxalic acid were reacted at 110°C for 2.5 h at a molar ratio of 1:5 to obtain sodium carboxylated hydroxymethyl cellulose; then carboxylated hydroxymethyl cellulose Sodium sodium (0.8 wt% of the mixed soil) and mixed soil (the mass ratio of attapulgite to loess is 1:2), corn straw powder (8 wt% of the mixed soil), pigs decomposed in a high-temperature anaerobic environment at 65 °C Manure (18 wt% of the mixed soil) was mixed and stirred evenly to obtain the desertification land improvement material;

[0028] (2) Put the rhizobia agent in the tree hole of 1.5 m×1.5 m, sprinkle 10 kg / mu of diamine phosphate into the tree hole, spread the desertification land improvement materials in the tree hole, and plant alder And seabuckthorn seedlings, buried in the soil, irrigated...

Embodiment 3

[0031] Embodiment 3, the improvement of desertified land by modified cellulose and hulled grains

[0032] (1) Under the catalysis of concentrated sulfuric acid, react hydroxypropyl cellulose and polyethylene glycol at a molar ratio of 1:2 at 140 °C for 4 h to obtain hydroxylated hydroxypropyl cellulose; Cellulose (1.5 wt% of the mixed soil), mixed soil (the mass ratio of montmorillonite and loess is 1:2), plant straw powder (12 wt% of the mixed soil), decomposed in a high-temperature anaerobic environment at 60 °C Cow dung (25 wt% of the mixed soil) is mixed and stirred evenly to obtain the desertification land improvement material;

[0033] (2) Sprinkle 15 kg of urea and diamine phosphate on the surface of the land, spread the desertification land improvement materials on the ground, and use a rotary tiller to till it. Hull grain seeds were seed-dressed with 0.5% potassium fulvic acid, drilled at a distance of 50 cm on the ground after rotary tillage, and irrigated to keep t...

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Abstract

The invention discloses a method for improving desertified land by combining a biochemical material and economic crop planting. The method comprises the following steps of (1) preparing the biochemical material: uniformly mixing mixed soil, modified cellulose, plant straw powder and decomposed animal manure to obtain the biochemical material for improving desertified land; (2) planting economic crops: first applying fertilizer on surface of desertified land, then spreading the biochemical material prepared above on the ground, rotary tillage with a rotary tiller, sowing seeds of economic crops, and irrigating to keep the soil moist to ensure seed germination, seedling emergence and growth. After the method is implemented in Lanzhou, Jiuquan, Zhangye, Dunhuang in Gansu, and Hami in Xinjiang, etc., water and fertilizer leakage can be effectively prevented, watering and fertilizing times and dosage are obviously reduced, water and fertilizer utilization rate is improved by 25-52%, soil organic matters, microbial species and quantity are obviously increased, and soil ecological functions are obviously improved.

Description

technical field [0001] The invention relates to a method for improving desertified land, in particular to a method for improving desertified land by combining biochemical materials with economic crop planting, and belongs to the fields of water and soil conservation and agricultural planting. Background technique [0002] The definition of desertification is proposed by the UNCCD: land degradation mainly caused by excessive human activities and climate change in fragile environments (arid, semi-arid and dry sub-humid areas). The cause of soil erosion degradation is the interaction between fluid (eg wind or water) drag and shear forces between soil particles. Soil erosion caused by water erosion is the largest source of soil erosion in the world. Desertification is the most serious environmental and socio-economic problem in the world, which mainly threatens the sustainable development of agriculture and economy. Among them, desertification is the main type of desertificatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/00A01B79/02
CPCA01B79/00A01B79/02
Inventor 雷自强程莎熊红冉李新雪刘晓梅叶喜娥仇雪雁杨尧霞
Owner NORTHWEST NORMAL UNIVERSITY
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