86 results about "Land productivity" patented technology

The invention discloses a method for inter-planting forage grass in orchards at a karst rock desertification region, in particular a method for inter-planting leguminous forage grass and gramineous forage grass below fruit trees in the orchards, wherein the mixing weight ratio of the leguminous forage grass to the gramineous forage grass is (5-7):(3-5), and the seeding rate is 1.5-2.0 kg / mu. According to the method, the leguminous forage grass and the gramineous forage grass are selected and sowed in a mixed way according to the characteristics of high yield and low crude protein content of the gramineous forage grass and high crude protein content of the leguminous forage grass, so that the yield and the quality of the forage grass are improved, and the palatability of the forage grass and the absorption of livestock to the nutrients of the forage grass are enhanced; by performing mixed sowing on the leguminous forage grass and the gramineous forage grass according to a weight ratio of (5-7):(3-5) under fruit trees, the coverage ratio of land vegetation of the orchards is increased and water and soil loss is greatly reduced; and meanwhile, the soil fertility of the orchards can also be increased, the environment of the orchards is improved, the productivity of land is improved, and the aims of increasing the yield of fruit trees and the yield of the forage grass are fulfilled.

The invention relates to a method for improving soil, in particular to a method for restoring cadmium pollution of soil in a passivation mode. The method is to add plant residue rich in sulfydryl in the soil and mainly comprises the following steps of: 1, grinding the plant residue rich in the sulfydryl to ensure that the length of the residue is less than 10cm; 2, adding the plant residue obtained in the step 1 into the soil to be restored and mixing the residue and the soil, wherein the weight part ratio of the soil to be restored to the plant residue of fresh plant is 1:0.001; and 3, ensuring that the moisture content of the soil added with the plant residue is maintained over 50 percent of the maximum field moisture capacity within 20 to 40 days, wherein the plant residue rich in the sulfydryl is cruciferae plant residue or liliaceae plant residue. Compared with the prior art, the method has the advantages of environmental friendliness, low restoring cost, no influence on farmland production, and improvement on soil fertility, content of soil organic matter and land productivity.

The invention discloses a method for maintaining and reproducing an evergreen lawn. The method includes technological steps of (1), selecting a warm-season lawn green land and determining rejuvenation and maintenance time of a lawn; (2), taking rejuvenation and maintenance measures; (3), manufacturing a cold-season soil-free grass carpet; (4) selling the cold-season soil-free grass carpet and restoring the growth of the warm-season lawn. The method has the advantages that the built lawn is rejuvenated and maintained on the same lawn area, the new lawn with the area one to two times that of the built lawn is reproduced simultaneously, accordingly, the green period of the built lawn is prolonged, the new lawn with the large area is reproduced, and a novel mode for maintaining and reproducing the evergreen lawn is formed; the land productivity is high, the production cost is low, and economical, social and environmental benefits are obvious; as observed by tests, manufacture of the soil-free grass carpet rarely affects the lawn of the green land, and the growth of the lawns is unaffected even if dormant periods in different years are properly shortened.

The invention discloses an ecology and environment-friendly soil improvement agent, which is prepared from the following raw materials in parts by weight: 15-25 parts of ore soil filler, 7-11 parts of coal gangue, 8-10 parts of straw, 10-20 parts of mixed grass meal, 3-5 parts of compound microorganisms, 5-7 parts of humate, 8-12 parts of excrement of livestock, 4-6 parts of desulfurized gypsum, 6-8 parts of bamboo charcoal powder and 5-7 parts of trace element additives. The soil improvement agent provided by the invention can effectively overcome the imbalance of nutrient elements in soil, improve soil fertility, loosen the soil, improve fertilizer efficiency, increase the contents of organic matters and nutrients, loosen hardened soil, accelerate a process of raw soil ripening and improve or recover land productivity; furthermore, industrial and agricultural wastes are used as most of the raw materials, so that the soil improvement agent is environmentally-friendly and safe; furthermore, the preparation method provided by the invention is lower in material cost, easy in obtaining of raw materials, simple in technology and easy to operate and in realization of industrial production, thus having higher practical value and a good application prospect.

The invention provides a method for thoroughly improving saline soil by combination of farming and grazing, which aims at overcoming the defects of too high input cost, difficulty in sustained improvement, shortage of organic fertilizer resources and the like of an existing saline soil improvement technology. The invention provides a method for thoroughly improving saline soil by combination of farming and grazing, which integrates wine making from corn, cattle raising by wine lees and straw and soil improvement by cattle dung into a whole. The technical method for improving saline soil by combination of farming and grazing comprises four key links, namely planting of corn, wine making from corn, cattle raising by wine lees and the corn and soil improvement by cattle dung. According to the method provided by the invention, a sustainable development mode of ensuring soil improvement input by cattle-raising benefits, ensuring organic fertilizer resources by cattle-raising scale, ensuring sustainable supply of organic fertilizer by cattle-raising normal state and reducing cattle-raising cost by improving productivity of land is established. The physicochemical properties of the soil can be obviously improved, and the productivity of land can be greatly improved. The method provided by the invention has the advantages of low cost, sustainable and gradual improvement of the saline soil, strong popularization applicability, significant economic, social and ecological benefits and the like.

The present invention discloses a 3S technology based method for returning farmland to forests. The method comprises the following steps: determining a returning farmland to forest scheme through remote sensing and GIS monitoring; generating a DEM by digitizing contour lines, and performing overlay analysis on an elevation map, a slope map, an aspect map, a land use map, and a map of returned farmland, to obtain a database of land use, slopes, and aspects; grading soil erosion by using a USLE equation; grading soil fertility and land productivity; performing overlay analysis on the database of land use, slopes, and aspects, soil erosion grading data and land productivity grading data, to obtain a grading and distribution map of returning farmland to forests; performing comprehensive analysis to obtain a planning map for returning farmland to forests; and digitizing collected data, to build a database for returning farmland to forests. The method disclosed by the invention is adapts to local conditions, and is suitable for trees and lands, and the human and capital investment is reduced, so as to meet the requirements for rapid returning farmland to forests and sustainable development.

A provided biomass power-plant ash-based composite modifier for acidic soil is characterized by being prepared by biomass power-plant ash, apatite, lime and fly ash. The technology of the composite modifier is simple, free of pollution, and easy to implement, is applicable to industrialized production but also individual farmer household preparation; and the composite modifier is capable of substantially improving soil pH and cation exchange amount, improving soil base ion composition, increasing soil nutrient and improving land productivity.

A saline soil conditioner for coastal intertidal zone and application thereof. The conditioner comprises, by mass ratio, 2-6 parts of an organic fertilizer, 0-0.45 part of humic acid, 0.005-0.015 part of a trace additive composition, 0.025 part of urea, and 0.050 part of diammonium phosphate. The trace additive composition comprises 60% of polyacrylamide, 30% of ''732'' type cation exchange resin, 5% of cytokinin and 5% of auxin. The soil conditioner can enhance land productivity, improve soil, increase soil aggregate, increase soil biological activity, reduce soil salinity, and promote plant growth in saline-alkali soil.

The invention discloses houses for breeding silkworms with living folium mori, row clipping cocooning frames and a method and relates to rearing instruments and a new method which is to directly arrange a plurality of houses in a mulberry field, lift the expansion rods (6) according to weather move the houses with silkworms, move the house (11) for breeding silkworms with living folium mori every four days, breed silkworms in the grids of the row clipping cocooning frames (19), which is provided with protrusions (16), clamping grooves (17) and grid layers (18), one by one at regular density and sequence, collect folium mori for silkworms layer by layer and grid by grid and bridge to supply folium mori in turn every three days. The problem of inter-row space for silkworms is solved, the four essential factors including ventilation, cooling and drying, adequate living folium mori and disinfecting for preventing diseases are guaranteed, an economic growth mode is changed, the working time per kilogram of cocoon is reduced to 0.2 hour from 5 hours, which is less than the 1.6 hours in Japan, land productivity and labour productivity are improved considerably, one person can breed 30 boxes of silkworms in a single season, high productivity, high efficiency, high quality, low consumption and labor conservation are achieved, and thus, the houses and the method promote the specialization, intensification, scale-up, industrialization, labor conservation and modernization of the silkworm and mulberry industry.

The invention discloses a method for reducing cadmium pollution to soil by planting edible amaranth. Remediation plants are planted in cadmium-polluted soil, a mixture of a beneficial bacterium agent and a humified straw solution is poured into the cadmium-polluted soil according to the ratio that water-holding capacity of the soil accounts for 60%-70% of the field capacity in a remediation period, wherein the weight ratio of the beneficial bacterium agent to the humified straw solution is 1 to 1, and the whole remediation plants are moved away from the cadmium-polluted soil at the end of the remediation period. On the premise that the edible amaranth is used as a biomass material, when the edible amaranth is used for remediating the cadmium-polluted soil, the activation induction effect of the beneficial bacterium agent and the humified straw solution is achieved, so that the biological effectiveness of cadmium is improved, the absorption and enrichment of the plants to the cadmium are promoted, and the phytoremediation rate of the soil polluted by the cadmium is increased; and in addition, the beneficial bacteria agent and the humified straw solution can promote the mass addition of the overground parts, the stem leaves and the dry matter of the root system of the edible amaranth, so that long-term goals of restoring land productivity and promoting regional landscape harmony, ecological balance and sustainable development are ultimately achieved.

The invention discloses a wheat stubble summer corn drip irrigation water and fertilizer integration cultivation method under a no-tillage direct-sowing condition. The method comprises the following steps of 1, planting wheat with equal line spacing, wherein 11 lines of the wheat are planted ever bed, and 4 drip irrigation pipes / belts are laid correspondingly; 2, removing 2 irrigation pipes / belts at intervals in every bed before the wheat is harvested, wherein the remaining 2 irrigation pipes / belts are used for water and fertilizer irrigation in a corn planting season; 3, adopting a wide and narrow line mode when corn is planted, wherein 4 lines of corn is planted every bed; 4, removing all the irrigation pipes / belts around the time when the corn is harvested, wherein cultivation preparation is conducted for wheat planting in the next season after the corn is harvested, and anniversary planting circulation is completed. The wheat stubble summer corn drip irrigation water and fertilizer integration cultivation method under the no-tillage direct-sowing condition can effectively solve the major problems that the wheat and corn main production area are short in water resource, low in water and fertilizer utilization efficiency, low in land productivity, low in labor productivity and the like, and has remarkable economic and social benefit.

A corn compound cultivation method for improving corn yield and land productivity relates to a corn compound cultivation method and aims at solving the problems that corn grain yield is low and the land productivity is poor in an existing cultivation method. The method comprises the following steps: performing stubble cleaning, rotary tillage, subsoiling and ridging by using a complete soil preparation machine; performing three-dimensional compound cultivation of corn, early-ripe potatoes, early-ripe wild cabbage, hot peppers or shitake mushroom; applying cured organic fertilizer before seeding; seeding the corn, the early-ripe potatoes, the early-ripe wild cabbage, the hot peppers or the shitake mushroom when the soil is stabilized and reaches 7 DEG C; deeply loosening or plowing furrows before corn seedlingscome up out of the ground; removing weeds and keeping one corn seedling each hole for sowing the seedling when the corn seedlings grow at a state of two leaves and one heart performing sun exposure for one day after removing the weeds and performing deep plowing and ridge lifting; removing tiller buds and the weeds, loosening ridge bodies and then performing the deep plowing and ridge sealing when the height of corn seedlings reaches 32-40 cm; and preventing and curing ostrinia nubilalis by adopting a biological prevention and control technology. The corn grain yield is increased compared with common micro-ridges, and the land productivity is improved obviously.

The invention relates to a soil improver and an improvement technology, and specifically discloses a saline-alkali soil improver. The saline-alkali soil improver is prepared from the following components of an alkalinity reducing agent, a structural agent and a synergist. The invention also discloses a saline-alkali soil improver applying technology. The saline-alkali soil improver applying technology comprises the following steps of spraying the alkalinity reducing agent, the structural agent and the synergist along with water irrigation. The invention also discloses a saline-alkali soil comprehensive improvement technology. The saline-alkali soil comprehensive improvement technology comprises the following steps: an underground water control measure, a desalting measure, an improver dosage determination measure and a technological process. The saline-alkali soil improver disclosed by the invention is rich in source of raw materials and simple in applying technology. After saline-alkali soil is improved by utilizing the saline-alkali soil improver and the saline-alkali soil comprehensive improvement technology, which are disclosed by the invention, a soil pH (Potential of Hydrogen) value, the alkalization degree and the total salt content are all obviously reduced, the soil physical and chemical properties are obviously improved, and the land productivity after 1 to 2 years can reach the level of local middle-yield fields.

The invention discloses a powdery ridge cultivation method for economic forests on hilly lands. The powdery ridge cultivation method particularly includes performing powdery ridge cultivation on stone-free regions of soil layers on the selected gentle hilly lands, to be more specific, deeply cultivating the middles of cultivation zones on the hilly lands by the aid of rotary cultivation spiral machines, shallowly cultivating two sides of each cultivation zone, smashing soil simultaneously, naturally ridging the cultivation zones after the soil is loosened by means of deep cultivation, and forming 'T'-shaped ridge pieces with oblique planes at certain angles; cultivating and planting the economic forests. The soil layers are positioned below the ground by the depths of 60cm. Shallow loose soil ditches are formed on two sides of each 'T'-shaped ridge piece and encircle the 'T'-shaped ridge piece. The powdery ridge cultivation method has the advantages that the powdery ridge cultivation method is particularly applicable to cultivating and planting fruit trees, wood, tea leave plants, oil crops, traditional Chinese medicinal materials and flowering plants, and has an important significance on controlling loss and destruction of water and soil resources of the hilly lands in China, protecting, improving and reasonably utilizing the water and soil resources, maintaining and improving the land productivity, developing production, improving ecological environments, reducing natural disasters such as flood, drought and mudslide, increasing economic benefits and ecological benefits and implementing cyclic development.

The invention relates to a technology for a high-yield high-efficiency cultivation mode for interplanting good mulberry with konjac, belongs to the technical field of high-yield high-efficiency cultivation technologies for plants, and can solve the problems that in the current conventional planting technology, mulberry leaves are low in yield and poor in quality; the land productivity of a mulberry field and economic benefits of sericulture management are directly influenced due to idle vacant fields between every two trees and between every two planting rows, in the mulberry field; land resource is wasted as the effective utilization rate of land is low. Therefore, through research on the high-yield high-efficiency planting mode of interplanting the good mulberry with the konjac, high yield of the good mulberry and the konjac is realized; good harvests of sericulture and the konjac can be realized; the effective utilization rate of land in the good mulberry field is increased to the maximum extent; the planting economic benefits of mulberry planters are increased; the sound steady development of the silkworm industry is facilitated; the difficult problems of low yield and poor quality of mulberry leaves, and low effective utilization rate of land in the mulberry field are effectively solved. The technology for the high-yield high-efficiency cultivation mode is an effective innovative technology; for every 666.6 square meters, about 350kg of good mulberry leaves are increased, the production value of the konjac is increased by over 3,000 yuan and the effect is very remarkable.

The invention relates to the technical field of agricultural chemical materials and specifically relates to a multifunctional soil improvement agent. The soil improvement agent is prepared from the following components: desulfurized gypsum, humic acid, polystyrene loaded polyamide-amine type resin, an adsorption auxiliary, polyacrylamide, citric acid, urea, magnesium sulfate, calcium gluconate andcompound amino acid, wherein the adsorption auxiliary is a kind of porous and loose adsorptive particles; the polystyrene loaded polyamide-amine type resin is a macromolecular substance with a dendritic functional group and can effectively adsorb metal ions such as Hg, Cu, Ni, Cd, Zn and Pb. The soil improvement agent not only can loosen the soil, improve the soil acidity and alkalinity and the microflora quality and recover the land productivity, but also can adsorb and cure the heavy metal elements in soil.

The invention discloses a release control gene compound fertilizer additive which consists of a component A, a component B and a component C; wherein, the component A is manufactured by diammonium phosphate, humic acid, dicyandiamide, amidin-carbamide, paper making black liquor lignin and zeolite powder; the component B is manufactured by polyethylene, polyethylene-vinyl acetate and hydrochloric ether; the component C is manufactured by soluble starch aqueous solution and nano-talcum powder. The product quality of the invention is stable; the release control effect is ideal; the nutrient release period is long; the product also has release control function on phosphor and kalium; the manufacture cost and the selling cost are lower; the product can be popularized and applied on field crops and can improve crop output, improve crop quality, amend and activate the soil, promote fertilizer land productivity, has lower film coating material price, can be supplied sufficiently, can be completely decomposed by biology, has no harmful effects on the soil and environment as well has excellent economic, social and ecological benefits.

The invention relates to a soil fertilizer synergist, in particular to a nitrogen synergist applied to protected horticultural vegetable fields and a preparation method thereof. The components by weight percentage are 10-30% of calcium cyanamide, 30-50% of zeolite powder and 30-50% of lignite. The preparation method comprises the following steps: the 10-30% of calcium cyanamide and the 30-50% of zeolite powder are mechanically and evenly mixed to obtain a mixture, and then the mixture is added with the 30-50% of lignite and mechanically mixed evenly, thus obtaining the nitrogen synergist. The preparation method is simple and pollution-free, and the nitrogen synergist is an organic and inorganic combined nitrogen synergist which has the effects of combining the slow release and quick release of nutrients, slowly releasing fertilizer nutrients, improving the utilization rate of the fertilizer, reducing the amount of chemical fertilizers used, improving the physical and chemical properties of soil and improving the productivity of the soil.

The invention discloses a soil wind erosion model comprising human factors and natural factors. A building method includes the steps that the mathematic relation between the wind erosion rate and the wind speed as well as between the wind erosion rate and the earth surface destruction rate is created according to wind tunnel experiment results; the wind erosion inhibiting effect of vegetation and the amplification effect generated after the earth surface is destructed are separated linearly, the wind erosion ratio represents the effect of fraction of coverage, and a traditional mathematical expression between the wind erosion ratio and the fraction of coverage is improved; the relation equation between the instant vegetation coverage and the soil wind erosion ratio is obtained; the soil wind erosion equation is corrected by taking wind erosion components in soil into consideration; the effect on soil wind erosion from human influence factors is quantized; integral is performed on the wind erosion equation, and the wind erosion equation is simplified according to the wind speed probability distribution characteristics to obtain an annual wind erosion amount calculation formula. The soil wind erosion model improves the productivity of land and ecological environment, and the soil wind erosion calculating method comprising human factors and natural factors is obtained.

The invention discloses functional and environment-friendly compounded planting nutritional soil and a preparation method thereof. The nutritional soil comprises raw materials in parts by weight as follows: 5-7 parts of modified biochar, 15-25 parts of modified filled earth, 5-7 parts of shell powder, 10-15 parts of cake fertilizer, 1-3 parts of a botanical insecticide, 8-12 parts of livestock excrement, 7-11 parts of agricultural straw, 0.1-0.3 parts of a growth regulator, 2-4 parts of a sterilization additive, 4-6 parts of rare earth micro-fertilizer and 6-10 parts of a moisture preserving additive. The nutritional soil is rich in nutrients, further has various functions of killing pests and bacteria, preserving moisture, improving soil and promoting growth and has higher practical valueand good application prospect, productivity of a land can be improved or restored, industrial and agricultural waste is abundantly used as the raw material and is environmentally friendly and safe, and operation and industrial production are easy.

The invention discloses a method for organic reconstruction of a soil body when a paddy field is reclaimed, and is applied to the technical field of land reclamation engineering. The method comprisesthe following steps of: S10, stripping topsoil of the paddy field which is to be reconstructed; S20, smoothing the stripped field, and constructing a plow pan; S30, taking surrounding topsoil which isrich in clay particles as soil dressing, mixing original soil, which is obtained after stripping in the step S10, with the soil dressing, and using a uniform earthing mode to form a plowing layer; and S40, adopting a soil conditioner to improve the fertility of the plowing layer, and performing soil pulverizing, irrigation and pulping to form a soil layer suitable for the growth of rice. According to the method, the internal structure of the soil can be improved within a short period of time, the environmental quality of the soil can be improved quickly and efficiently, the ecological systemof the soil can be restored, and the feasibility of transforming a field into the paddy field is increased; finally, the composition of the soil body can reach an appropriate proportion, so that effects of moisture and fertilizer retention of the soil are enhanced, and the productivity of a new reclaimed field is increased.

The invention discloses a alkali-saline land productivity recovery method. The method is characterized by comprising the following steps: (1) applying biochar in a land in a dry area, wherein the weight ratio of the application amount is 1 percent to 10 percent; (2) after one turn of crops are planted and harvested, and before the next turn of crops are planted, removing a soil layer with thickness more than 2cm from a land surface. Because of the application of the biochar, the saline and alkaline ions are promoted to be enriched above 2 cm of the soil layer, so that conditions are provided for a dry method productivity recovery method; the field moisture capacity of the land can also be improved by the application of the biochar; water conservation and crop growth are facilitated; the soil air permeability is improved; the soil quality is improved; the crop yield and the land productivity are improved; the method is easy to operate and convenient to popularize.

The invention discloses a rice seedling substrate, a rice seedling substrate board and a preparation method of the rice seedling substrate. The rice seedling substrate can meet all nutrient elements required by rice seedlings, is simple and convenient in seedling operation, and meanwhile, solves the problem of difficulty in taking soil and the problem of seedbed weeds. A microorganism bacterium agent in the rice seedling substrate can kill pathogenic bacteria, change the rhizospheric microorganism environment and improve disease resistance of rice. The rice seedling substrate contains a compound slow release fertilizer and can meet the requirement of seedlings for nutriment in 40 days. Meanwhile, the rice seedling substrate is added with an efficient, low-toxic and low-residual green pesticide, does not propagate disease pests and weeds, is green, environmental-friendly, healthy and safe, and can increase soil organic matter and enhance land productivity when being used for long time. Moreover, according to the rice seedling substrate board, a seedling seedbed is good in air permeability; seedling roots grow vigorously; seminal roots and secondary roots are long in service life; roots are long; the number of the roots is great; a entangle root effect is obviously better than that of soil seedling; cultured rice seedlings are high in disease resistance and can effectively prevent and treat bacterial wilt and damping off in the rice seedling stage.

The invention relates to a striped subsoiling ridge-cleaning straw-mixing combined operation machine and belongs to the technical field of agricultural machinery. The striped subsoiling ridge-cleaning straw-mixing combined operation machine comprises a rack, a gearbox, a transmission, and a subsoiling device, a ridge cleaning device, a mixing device and a compacting device which are mounted on the rack and are sequentially arranged from the working front end to the rear end; a subsoiler of the subsoiling device and a cutterhead set of the mixing device are arranged in a furrow; the rigid cleaning device is arranged at a furrow side position; and a through shaft of the mixing device is connected with an output shaft of the gearbox by the transmission. The striped subsoiling ridge-cleaning straw-mixing combined operation machine can simultaneously complete dry farmland preparation and straw returning operations of subsoiling, ridge cleaning, mixing, compacting and the like for once in the operating process, moreover, also can achieve the effects of subsoiling, cleaning a ridge, returning straws to the field, enhancing land productivity and reinforcing soil organic matter, and effectively prevents straw burning. According to the machine developed by the invention, the combined operation of one machine is achieved, a utilization rate of a large-medium tractor is effectively improved, and the technical problems of agricultural mechanized production of a plough layer, such as subsoiling and soil improvement, interval farming, straw returning and the like, are effectively solved.

The invention relates to a Yili river valley newly cultivated slope land tillage mode for preventing soil erosion. According to the mode, each area is divided into three sub-areas including a grain crop area, an alfalfa forage area and a forest fruit area in the direction perpendicular to the isoheight, the alfalfa forage area and the grain crop area are subjected to crop rotation after two years of growth, that is, grain crops are planted in the alfalfa area, alfalfa is planted in the grain crop area, black walnuts and filbert trees are planted in the forest fruit area, and soybeans are subjected to interplantation in forest. Planting is conducted through zoning and crop rotation, the planting layout is optimized, soil coverage is increased, the farming-free period is shortened, water and soil conservation is achieved, the yield is increased and stabilized, cost is reduced, efficiency is improved, influences of crop continuous cropping are reduced, soil fertility is maintained, soil productivity of newly cultivated slope land is improved, soil erosion, caused by land surface exposure, of the newly cultivated slope land is prevented, soil utilization efficiency is improved, and accordingly water and soil conservation of the Yili river valley newly cultivated slope land, efficient agricultural production and sustainable utilization of soil resources are achieved.

The invention relates to a soil improver containing coconut chaff and a preparation method thereof, and relates to a soil improver. The soil improver containing the coconut chaff comprises the following components by weight percent: 0.75 to 0.92 percent of coconut chaff, 0.05 to 0.1 percent of diatomite, 0.01 to 0.05 percent of polyaspartic acid, 0.01 to 0.05 percent of humic acid, 0.005 to 0.03 percent of polyacrylamide and 0.005 to 0.02 percent of boric acid. The preparation method comprises the following steps: (1) dissolving polyacrylamide, polyaspartic acid and boric acid in water to obtain a mixed solution; (2) uniformly mixing powdered coconut chaff, diatomite and humic acid to obtain a solid powdered mixture; (3) spraying the mixed solution obtained in the step (1) into the solid powdered mixture obtained in the step (2), mixing, and air-drying to obtain the soil improver containing the coconut chaff. The production cost is low, raw materials are environmentally friendly and non-toxic, the secondary salinization and hardened soil can be effectively improved, and the productivity of the earth can be restored and improved.

The invention belongs to the technical field of agricultural production, and relates to the northern saline and alkaline land improving and fertilizing technology, in particular to a northern coastal saline and alkaline land rapid fertilizing method. The method includes the following steps that 1, salty pond silt is evenly put on the surface layer of soil; 2, the pond silt is covered with salt water ice; 3, after the salt water ice in the step 2 is melted and seeps, the surface layer of the pond silt is covered with a mulch; 4, the mulch is removed before spring sowing in the step 3, and a soil plough layer is turned to be uniform. The method has the advantages that aiming at the problems that after northern coastal saline and alkaline land is desalted physically, soil is barren, and productivity is low, a large amount of waste salty pond silt in the region is adopted as the raw materials, soil rapid fertilizing and structural improvement are achieved, and then the productivity, the utilization rate and the like of the land are rapidly improved. The method has remarkable economic, social and environmental benefits on the aspects of increasing the yield, improving the environment and the like.

The invention relates to a passivating material for repairing cadmium and copper polluted soil and a repairing method combining agronomic measures. The passivating material has a pH value of 10-13 anda particle diameter of 1-3 mm, and is prepared from, by mass, 60% of biomass power plant ash, 20% of lime, 10% of apatite and 10% of an organic fertilizer. The combined agronomic measures include application dosage of the passivating material, plant planting time, density, planting method and soil moisture control. The passivating material and the repair method combining the agronomic measures can effectively promote the transformation of soil heavy metals Cd and Cu from an available state to a potential available state or an unavailable state, promotes plant growth and biomass accumulation while stabilizing / solidifying the heavy metals Cd and Cu, and improves land productivity and economic benefits. The material source is wide, the price is low, the combined repair method is simple and feasible, and the repair is efficient and stable, so that the passivating material has high economic benefit, ecological benefit, repair application and popularization value.

The invention discloses a composite biology organic fertilizer. A multi-germ group united treacle sponge is made by edible mushroom group and the carrier thereof, saccharomyce group and the carrier thereof, EM germ group and the culture medium thereof through synchronously pre-ferment. The organic biology material with multi-germ united ferment is made by mixing the treacle sponge and plant backing product and livestock or poultry dejecta by secondary enlargement ferment. The organic biology material and activation humic acid are mixed to get the invention. The invention is simple in technique, energy saving and energy decreasing, environment-friendly due to the use of deserted resources, low cost and strong activity and big polymerized quantity of wholesome microbe. Because the invention combines the advantages of the organic biology fertilizer and the humic acid fertilizer; therefore, the complementation beneficiate action can fully inspire the plant physiological potentiality, thereby reducing severe restriction of bad weather to crop farming. Pesticide chemistry hormone and bane residue are considerably degraded through promoting fertilizer land productivity. Nutrient total manorial effect lasts for more than 120 days. The invention is applicable to production of safe, healthy, nature nutritive organic ecology agricultural products and contributes to the sustainable development of crop farming.

The invention provides a cultivation method for interplantation between dragon fruit and sweet potatoes, and land effective and comprehensive utilization can be achieved and dual-harvest of fruits andpotatoes can be realized. The cultivation method is that caves are dug on two sides of ridges being 40 to 50cm distant from dragon fruit stock plants or caves are dug between two piles at an intervalof 20 to 30cm; mixed fertilizer is placed in the caves; and then excellent sweet potato seeds or sweet potato seedlings are planted. The cultivation method for interplantation between dragon fruit and sweet potatoes is convenient to operate and easy to implement. Spatial potential can be fully developed by interplantation between the dragon fruit and the sweet potatoes, and utilization of illumination, heat energy and vaporous water can be enhanced, so land productivity can be improved; dual harvest of grain and fruits can be obtained by the interplantation between the dragon fruit and the sweet potatoes, so income can be increased and mountainous agricultural development can be promoted and targeted poverty relief and industrial poverty relief can be obtained; and land utilization and economic values can be greatly enhanced.