Method for improving desertified land by combining biochemical materials with planting of economic crops
A commercial crop and biochemical technology, applied in the field of agricultural planting and soil and water conservation, to achieve the effect of improving soil ecological function, good growth environment, and reducing crop transpiration
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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 hours 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, irrig...
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, hydroxypropyl cellulose and polyethylene glycol were reacted at 140 ℃ for 4 hours at a molar ratio of 1:2 to obtain hydroxylated hydroxypropyl cellulose; then the hydroxylated hydroxypropyl cellulose element (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 cow Manure (25 wt% of the mixed soil) is mixed, stirred and mixed, and the desertification land improvement material is obtained;
[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...
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