CN105967934A - Soil conditioner for improving nutrient leaching loss resistance of soil - Google Patents

Abstract

The invention discloses a soil conditioner for improving nutrient leaching loss resistance of soil. The soil conditioner is made from the following raw materials, by weight part, 6-8 of humulus lupulus, 1.2-1.4 of urea phosphate, 15-18 of shell powder, 3-4 of lentinan, 7-9 of Chinese cabbage residue, 5-6 of ammonium chloride, 63-65 of polluted pig dung and urine, 13-15 of a black liquor from papermaking, 3.5-3.7 of a nitric acid solution with the concentration being 10%, 12-13 of a thick alum liquid and a proper amount of water. The soil conditioner adopts raw materials with high superficial areas matching thoroughly-decomposed organic matters. The density of the soil aggregate is increased, the permeability of the soil is reduced, and the cation exchange capacity is improved. Through the coated structure of the conditioner, the release of nutrient elements is reduced, thereby reducing the nutrient concentration in an area. Further, the conditioner has an absorbing and maintaining effect for fixing nutrient components in a shallow soil layer, thereby further improving the nutrient leaching loss resistance of the soil.

Description

A kind of soil conditioner improving the anti-leaching loss of nutrient in soil

Technical field

The present invention relates to technical field of soil remediation, particularly relate to a kind of soil conditioner improving the anti-leaching loss of nutrient in soil.

Background technology

Soil improvement is the bad quality for soil and structure, takes corresponding measure to improve soil property, increases soil fertility, and soil improvement renovation agent is a kind of important application of soil improvement.But seen soil remediation modifying agent has many defects in the market: one is to use raw material with synthetic macromolecular compound, and it is not easily decomposed and extended residual in soil, has potential safety hazard；Two is function singleness, for variety classes soil, such as acid and basic soil, heavy metal pollution degree, nutrient are deficient etc. without effectively for, cause improveing remediation efficiency low, even play retroaction；Three is that the cycle of improving the soil is long, and relatively costly, it is impossible to large-scale application.For problem above, low cost, high specific aim and environmentally friendly soil remediation modifying agent become soil improvement aspect prior development direction.

Fertilizer nutrient leaching loss refers to that the Fertilizer nutrient element imposing in soil moves the loss caused to root system of plant mobile layer vertically downward with water, and it not only wastes manure resources, reduces fertilising benefit, and can cause the serious environmental problems such as underground water pollution.

Pig dung and urine is as a kind of renewable biological source wide, with low cost of originating, the nutrients such as abundant organic matter and N P and K are contained because of it, use as the raw material of soil improvement reparation and there is great potential, and owing to economization cultivation needs, during pig is fed, feedstuff contains a large amount of additive, cause heavy metals exceeding standard, indirect pollution Excreta.And by pickling and ultrasonication, the metallic compound of indissoluble state in Pig dung and urine can be made to form soluble metal ion, and utilize acoustic cavitation effect to make the pulverizing of pig manure granule, cell wall crack, the heavy metal release of order absorption and parcel is out, the two is used in combination and reaches to purify purpose, makes this cheap raw material of pollution Pig dung and urine apply and is possibly realized in the preparation of soil improvement renovation agent.

Alumen slurry is Alumina by-product when " water seaoning " produces Alumen, through dried gained white powdery solids, its main component is silicon oxide, aluminium oxide and the silicate mineral of water composition, and containing macroelement and various trace elements such as abundant Ca, Mg, Fe, K, S, P, because it has the features such as granule is thin, specific surface area is big, absorption affinity is strong, there is in terms of soil improvement good application prospect.

The above being conjointly employed in the exploitation of soil remediation modifying agent, is simply easily achieved, the development for soil improvement renovation agent opens new way.

Summary of the invention

The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of soil conditioner improving the anti-leaching loss of nutrient in soil.

The present invention is achieved by the following technical solutions:

A kind of soil conditioner improving the anti-leaching loss of nutrient in soil, is prepared by the raw materials in: Flos lupuli (Flos Humuli Lupuli) 6-8, urea phosphate 1.2-1.4, conch meal 15-18, lentinan 3-4, Chinese cabbage slag 7-9, ammonium chloride 5-6, pollution Pig dung and urine 63-65, black liquid 13-15,10% salpeter solution 3.5-3.7, Alumen slurry 12-13, water are appropriate.

In described raising soil, the soil conditioner preparation method of the anti-leaching loss of nutrient specifically comprises the following steps that

(1) conch meal, Chinese cabbage slag, Flos lupuli (Flos Humuli Lupuli) are mixed and added into the water of gross weight 1.5-2 times, and after mixing, in retting fermentation 3-4 week, obtain fermentation residue and fermentation liquid be standby after fermentation material crushes expression separation；

(2) put into after black liquid being dried in calcining furnace, calcine 70-90 minute at 430-450 DEG C, it is mixed and added into gross weight 3-4 times quality water with pollution Pig dung and urine after taking-up, 10% salpeter solution is added after stirring evenly, and compound is carried out supersound process, supersonic frequency is 40kHz, compound is pressed after ultrasonic 90-100 minute 60-80 rev/min and stirs 3 hours, stand 80-100 minute afterwards, after removing upper solution, lower floor's drying materials is pulverized stand-by；

(3) by step 1 gained fermentation residue and step 2 gained material, lentinan mixing granulation, spheroidal particle is obtained standby；

(4) Alumen starch comminution is crossed the most afterwards 100-120 mesh sieve, and mix homogeneously by solid-liquid mass ratio 1:4 with 1mol/L sodium hydroxide solution, be again heated to 70-72 DEG C, filter after being incubated 100-120 minute and take out Alumen slurry, clean to neutral with water, dry for standby；

(5) step 1 gained fermentation liquid is mixed with step 4 gained modification Alumen slurry, urea phosphate, ammonium chloride and other residual componentss, again step 3 gained granule is placed in the roller machine with shower nozzle of the top, during rolling granule, granule is uniformly sprayed by mixed fermentation liquid through shower nozzle, the coated particle oven drying at low temperature at 40-45 DEG C that finally will obtain.

The using method of the present invention is for being embedded at upper soll layer 10-15cm by renovation agent after being turned over by contaminated soil, and every mu of soil uses 80-100kg renovation agent.

The invention have the advantage that

The mixing scrubbing of Pig dung and urine and black liquid uses and soil organic level is greatly improved, and erodable Alumen slurry surface after thermokalite modification Alumen slurry, it is made to become rough porous, surface texture loosens, and specific surface area improves, and strengthens the lattice fixation of its heavy metal ion, serve not only as improvement reparation grain skeleton and there is good stability, and the residuals such as heavy metal-passivated, chemical medicine can be adsorbed, alkaline modification Alumen slurry mixes with the Pig dung and urine of acidifying, also ensure that stablizing of P in soil H-number.The soil conditioner of the present invention uses high surface raw material to coordinate the use of decomposed organic matter, soil granular density can be improved, reduce soil permeability and improve cation exchange capacity (CEC), the structure of modifying agent cladding can slow down the release of nutrient element simultaneously, reduce nutrient density in region, nutrient is fixed on soil shallow-layer by the RETENTION BY SOILS being aided with modifying agent, and then improves the soil anti-leaching loss performance for nutrient.

Detailed description of the invention

A kind of soil conditioner improving the anti-leaching loss of nutrient in soil, is made up of the raw material of following weight portion (kg): Flos lupuli (Flos Humuli Lupuli) 6, urea phosphate 1.2, conch meal 15, lentinan 3, Chinese cabbage slag 7, ammonium chloride 5, pollution Pig dung and urine 63, black liquid 13,10% salpeter solution 3.5, Alumen slurry 12, water are appropriate.

In described raising soil, the soil conditioner preparation method of the anti-leaching loss of nutrient specifically comprises the following steps that

(1) conch meal, Chinese cabbage slag, Flos lupuli (Flos Humuli Lupuli) are mixed and added into the water of gross weight 1.5 times, and after mixing, retting is fermented 3 weeks, obtains fermentation residue and fermentation liquid is standby after fermentation material crushes expression separation；

(2) put into after black liquid being dried in calcining furnace, calcine 70 minutes at 430 DEG C, it is mixed and added into 3 times of quality water of gross weight with pollution Pig dung and urine after taking-up, 10% salpeter solution is added after stirring evenly, and compound is carried out supersound process, supersonic frequency is 40kHz, is stirred 3 hours by 60 revs/min by compound after ultrasonic 90 minutes, stand 80 minutes afterwards, after removing upper solution, lower floor's drying materials is pulverized stand-by；

(3) by step 1 gained fermentation residue and step 2 gained material, lentinan mixing granulation, spheroidal particle is obtained standby；

(4) Alumen starch comminution is crossed the most afterwards 100 mesh sieves, and mix homogeneously by solid-liquid mass ratio 1:4 with 1mol/L sodium hydroxide solution, be again heated to 70 DEG C, filter after being incubated 100 minutes and take out Alumen slurry, clean to neutral with water, dry for standby；

(5) step 1 gained fermentation liquid is mixed with step 4 gained modification Alumen slurry, urea phosphate, ammonium chloride and other residual componentss, again step 3 gained granule is placed in the roller machine with shower nozzle of the top, during rolling granule, granule is uniformly sprayed by mixed fermentation liquid through shower nozzle, the coated particle oven drying at low temperature at 40 DEG C that finally will obtain.

In order to further illustrate the using value of the present invention, inventor chooses one block of experiment soil and uses the present invention to improve renovation agent to carry out the checking of effect, discovery employed soil improvement renovation agent of the present invention after 60 days, in soil, various heavy content substantially reduces, available nutrient constituent content improves, after 180 days, soil with organic matter level and Cation Exchange Capacity in Soils are all improved, topsoil soils constituent content compares that not improve soil higher, through pouring water, the effect such as rainwater can keep the demand of plant root, soil property is effectively improved.

Claims (2)

1. the soil conditioner improving the anti-leaching loss of nutrient in soil, it is characterized in that, be prepared by the raw materials in: Flos lupuli (Flos Humuli Lupuli) 6-8, urea phosphate 1.2-1.4, conch meal 15-18, lentinan 3-4, Chinese cabbage slag 7-9, ammonium chloride 5-6, pollution Pig dung and urine 63-65, black liquid 13-15,10% salpeter solution 3.5-3.7, Alumen slurry 12-13, water are appropriate.

2. according to the soil conditioner of the anti-leaching loss of nutrient in the raising soil described in claims 1, it is characterised in that specifically comprising the following steps that of preparation method

(1) conch meal, Chinese cabbage slag, Flos lupuli (Flos Humuli Lupuli) are mixed and added into the water of gross weight 1.5-2 times, and after mixing, in retting fermentation 3-4 week, obtain fermentation residue and fermentation liquid be standby after fermentation material crushes expression separation；

(2) put into after black liquid being dried in calcining furnace, calcine 70-90 minute at 430-450 DEG C, it is mixed and added into gross weight 3-4 times quality water with pollution Pig dung and urine after taking-up, 10% salpeter solution is added after stirring evenly, and compound is carried out supersound process, supersonic frequency is 40kHz, compound is pressed after ultrasonic 90-100 minute 60-80 rev/min and stirs 3 hours, stand 80-100 minute afterwards, after removing upper solution, lower floor's drying materials is pulverized stand-by；

(3) by step 1 gained fermentation residue and step 2 gained material, lentinan mixing granulation, spheroidal particle is obtained standby；

(4) Alumen starch comminution is crossed the most afterwards 100-120 mesh sieve, and mix homogeneously by solid-liquid mass ratio 1:4 with 1mol/L sodium hydroxide solution, be again heated to 70-72 DEG C, filter after being incubated 100-120 minute and take out Alumen slurry, clean to neutral with water, dry for standby；

(5) step 1 gained fermentation liquid is mixed with step 4 gained modification Alumen slurry, urea phosphate, ammonium chloride and other residual componentss, again step 3 gained granule is placed in the roller machine with shower nozzle of the top, during rolling granule, granule is uniformly sprayed by mixed fermentation liquid through shower nozzle, the coated particle oven drying at low temperature at 40-45 DEG C that finally will obtain.