CN105027940A - Forage grass planting method for rocky desert area and use method thereof - Google Patents
Forage grass planting method for rocky desert area and use method thereof Download PDFInfo
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Abstract
The invention discloses a forage grass planting method for a rocky desert area. According to characteristics of the rocky desert area, through land rocky desertification grade classification, forage grass selection, land preparation, forage grass seed selection, seed processing, sowing time selection, sowing amount selection, sowing mode selection, post-sowing compression and a field management technology, scientific forage grass planting is achieved, high-yield forage grass planting is obtained, economic benefits are remarkable, the environment is greatly improved, the water and soil are preserved, the rock desertification environment is improved, the primary productivity of land can be maintained and effectively improved, the yields of forestry and animal husbandry are increased, and the income of farmers is increased; meanwhile, soil carbon sink can be effectively increased, and the environment quality is improved.
Description
Technical field
The invention belongs to pasture growing technical field, relate to a kind of Rocky Desertification Region pasture planting method.
Background technology
Karst District in Southwest China, be the area that the large karst in the world three concentrates that in district in flakes, area is maximum, ecotope is the most fragile, Rock Desertification Degree is the most serious.Solving rocky desertification problem is one of the most urgent task in whole Karst Mountain Areas.Rocky desertification problem is made up of main two aspects, and one is ecotope, and two is social economies.Why rocky desertification problem produces, and mainly due to people backward in economy irrational exploitation ecotope blindly, causes ecotope severe gradually, finally hinders again socioeconomic development.Agriculture grass woods grass engineering recovers stony desertification ecotope, one of best mode of Development of Social Economy.Rocky Desertification Region soil layer is shallow, and fertility is lower, will study, to ensure that follow-up work is carried out smoothly before the engineering construction of agriculture grass woods grass to some key technologies.Grassland establishment technology, economic forest build and plant technology, shelter forest build and plant technology are the key of agriculture grass woods grass Spatial optimum allocation, therefore consider from from these three angle entirety for this special region need for environment of stony desertification.Herbage is the material base administering stony desertification engineering middle peasant grass biological measures, is Rocky Desertification Region ecological recovery, improves an important ring of water and soil conservation efficiency.Rocky Desertification Region soil moisture shortage, illumination resource relative shortage, photosynthetic rate is the most basic key element of herbage material production, therefore also just require will possess high photosynthesis efficiency and high-moisture utilization ratio in the herbage of Rocky Desertification Region plantation, and existingly also do not occur for Rocky Desertification Region pasture growing the complete technology that a kind of science, economy are high, water and soil conservation is good.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of Rocky Desertification Region pasture planting method, solve Rocky Desertification Region pasture growing and lack the scientific problem with being difficult to plantation and deficiency in economic performance, play and conserve water and soil, improve stony desertification environment, can also effectively improve and maintenance soil primary productivity, increase Agriculture, forestry And Animal Husbandry output, improve farmers' income, effectively can also increase soil carbon sink simultaneously, improve environmental quality, to overcome the deficiency of prior art problem.
Technical scheme of the present invention: a kind of Rocky Desertification Region pasture planting method, comprises the following steps:
(1) stony desertification divided rank: according to 0.2km
2the exposed rate of figure porphyry stone, 0.2km
2stony desertification grade is drawn in the situation calibration soil of figure spot vegetation, the capped rate of soil;
(2) screening of herbage: filter out drought resisting, cold resistance is strong, resistance is stronger herbage;
(3) soil prepares: need thoroughly to remove injurious weed, soil cultivation before planting sown pasture, use base fertilizer;
(4) seed treatment: impurity elimination, adopt galling seed coat, warm-cold seed treatment or chemical treatment method, go awns, fertilizer and insecticide are dressed seed;
(5) selection in sowing time: sowing time, temperature rose to more than 5 DEG C, sowed in spring in 2 ~ March;
(6) seeding quantity: main formulas for calculating is as follows:
The amount of broadcasting during actual sowing rate=true value of seeds 100/true value of seeds
True value of seeds=cleanliness × germination rate
Cleanliness (%)=(sample weight-impurity weight)/sample weight × 100
Germination rate (%)=germinative number grain/confession examination grain number × 100;
(7) sowing depth: sowing depth 1 ~ 10cm;
(8) seeding method: adopt clean culture or mixed seeding;
(9) rear suppression topsoil is broadcast;
(10) field management: field management comprise topdress, irrigate, management of weeds, the extermination of disease and insect pest, managed before the winter, herbage harvesting, auxiliary facility construction.
Preferably, the use steriland herbicide that weeds a garden in above-mentioned steps (3); Described soil cultivation can be carried out ploughing soil in the place of more than soil thickness 20cm, rakes the soil level, a kind of farm tools ground, suppression, will along hillside fields contour when sowing or cuttage herbage, and undertaken broadcasting sowing by land occupation condition or bunch planting control lines distance, can take no-tillage system at below soil thickness 20cm, bunch planting is planted; Described base fertilizer of using is based on fertilizer, employing is become thoroughly decomposed fertilizer, deep placement is wanted during fertilising, layering is executed, multiple fertilizer mixing is executed, farmers' made compost before turning over or green manure and slow release chemical fertilizer evenly spread by arable land, below soil layer of being turned over to when ploughing, base manure combines with autumn ploughing and applies 15000 ~ 30000kg/hm
2.
Preferably, the seeding method in above-mentioned steps (8), for the average annual temperature in Rocky Desertification Region 16 ~ 18 degree, 1500 ~ 1700 kilowatt hours/m
2frost-free season is greater than 300 days, adopt clean culture hybrid giant napier, for plantation clean culture khuskhus main under bloompepper forest or alfalfa, main employing drilling or broadcast sowing, fragmentary plot adopts bunch planting, dragon fruit underwood planting khuskhus or alfalfa, improve nutrient quality, herbage adopts water-loss reducer to improve Seed viability and leguminous forage inoculation root nodule at seeding time, adopts the same walnut of grass family+leguminous forage+Rosa roxburghii intercropping formation " tall ~ to fill with ~ grass " integrated mode or grass family+leguminous forage to form " agriculture ~ grass " integrated mode with crop intercropping.
Preferably, topdressing in above-mentioned steps (10), topdresses main based on quick-acting chemical fertilizer, and leguminous forage fertilising should in branch later stage to squaring period and after cradling at every turn, and topdress mainly fertile based on P in K fertilizer, executes 25 ~ 75kg/hm
2also need to apply N seedling stage fertile, gramineous forage grass ground after jointing to heading stage and after cradling at every turn, mainly fertile based on N, execute 30 ~ 90kg/hm2, mixed pasture fertilising should based on P fertilizer and K fertilizer, divide minimum two phases fertilising, when pouring water abundant, executed 1 well-rotted farmyard manure every 3 ~ 4 years, fertilising 7500 ~ 15000kg/hm
2.
Preferably, the irrigation in above-mentioned steps (10), runs into arid and waters minimum water of once turning green when For Herbage Turning Green, grass family is from jointing to blooming even milk ripe stage, and leguminous forage, can be watered 1 ~ 2 time to squaring period with the branch later stage, when water source is abundant, water 1 time after cradling at every turn.
Preferably, the management of weeds in above-mentioned steps (10), adopts real tillage and cradles immature weeds.
Preferably, the harvesting of the herbage in above-mentioned steps (10), lower numerous grass cradles stubble height at 3 ~ 4cm, and top grass cradles stubble height at 5 ~ 6cm, and cradling toothing every year for the last time should at more than 10cm.
Preferably, above-mentioned a kind of Rocky Desertification Region pasture planting method also comprises grassland improvement, take temporary transient fencing, remove poisonous and harmful weeds, after-culture is reseeded and is recovered impaired meadow, reducing and herd or prohibit and herd, carrying out herbage compensation by cradling, after-culture mainly according to which kind of herbage of meadow reduces and morely carries out corresponding after-culture and cuttage.
Beneficial effect of the present invention: compared with prior art, the present invention is by Rocky Desertification grade classification, herbage is screened, soil prepares, forage seeds is selected, seed treatment, sowing time is selected, seeding quantity is selected, seeding method is selected, broadcast the technology such as rear suppression and field management, realize scientific pasture growing, obtain the herbage of high yield, remarkable in economical benefits and environment are improved greatly, play and conserve water and soil, improve stony desertification environment, can also effectively improve and maintenance soil primary productivity, increase Agriculture, forestry And Animal Husbandry output, improve farmers' income, effectively can also increase soil carbon sink simultaneously, improve environmental quality.
Embodiment
Now in conjunction with following example, the present invention is further explained.
Embodiment 1: a kind of Rocky Desertification Region pasture planting method, comprises the following steps:
(1) stony desertification divided rank: according to 0.2km
2the exposed rate of figure porphyry stone, 0.2km
2stony desertification grade is drawn in the situation calibration soil of figure spot vegetation, the capped rate of soil, and moderate Karst Rocky Desertification is at 0.2km
2the exposed rate of figure porphyry stone is 51 ~ 70%, 0.2km
2figure spot vegetation, the capped rate of soil are 49 ~ 30% land desertification aggravations, the soil erosion is serious, soil layer is shallow, mostly be stone matter sloping upland and open shrublands grass slope, the gradient comparatively large (being generally greater than more than 25 °), strong by human activity interference, severe water and soil erosion, Eco-geology frequent natural calamity; Moderate Rocky Desertification Region ecological environment frailty, soil layer is shallow, and vegetation growth condition is comparatively severe, and natural meadow ecosystem community organization is comparatively simple, and good forage proportion is less, and Rocky Desertification Control difficulty is larger; Intensity stony desertification is at 0.2km
2the exposed rate of figure porphyry stone is 71 ~ 90%, 0.2km
2figure spot vegetation, the capped rate of soil are 29 ~ 10%, and land desertification is strong, and surface cover is rare, substantially can flow without soil, with mostly being the difficulty utilization being about to lose agricultural value, be Rocky desertification process close to top grade, all the other situations are slight stony desertification;
(2) screening of herbage: the grade divided according to stony desertification and physio geographic condition and Socioeconomic Characteristics, the selection of herbage kind should according to the principle of Benefits in economic and social terms of suiting measures to local conditions, take into account, filter out drought resisting, cold resistance is strong, resistance is stronger herbage, preferred rescuebrome gramineous, English ryegrass, Festuca Arundinacea, orchardgrass, the alfalfa of pulse family, red clover, Trifolium repense, and fodder maize and witloof, khuskhus, hybrid giant napier;
(3) soil prepares: need thoroughly to remove injurious weed as Eupatorium adenophorum, creeping oxalis etc. before planting sown pasture, also will remove for other weeds before planting, uses steriland herbicide as glyphosate etc., soil cultivation, Rocky Desertification Region soil layer is extremely shallow, soil layer serious loss, lack cover layer, eluvial horizon, illuvial horizon, substantially parent rock horizon is only had, therefore need to suit measures to local conditions, ploughing soil can be carried out in the place of more than soil thickness 20cm, rake the soil level, a kind of farm tools ground, suppression, neat so that emerge, will along hillside fields contour when sowing or cuttage herbage, and undertaken broadcasting sowing by land occupation condition or bunch planting control lines distance, be conducive to water conservation soil conservation, no-tillage system can be taked at below soil thickness 20cm, bunch planting is planted, reduce the disturbance only having soil, for fragmentary soil then according to " seizing every opportunity " principle, flexible plantation, use base fertilizer based on fertilizer, employing is become thoroughly decomposed fertilizer, deep placement is wanted during fertilising, layering is executed, multiple fertilizer mixing is executed, before turning over, farmers' is made compost or green manure and slow release chemical fertilizer (as rock phosphate, superphosphate, ca and mg fertilizer etc.) evenly spread by arable land, turned over to when ploughing below soil layer, to meet the demand of herbage or crops whole vegetative period, base manure preferably combines with autumn ploughing and applies, effect of increasing production is more desirable than fertilizer applied in the spring season, the growing way that appropriate base fertilizer is conducive in 1 year of seedling is executed before planting, the sowing amount of base fertilizer is generally in conjunction with herbage kind, the factors such as fertilizer quality are determined, generally apply 15000 ~ 30000kg/hm
2,
The principle that forage seeds is selected, be applicable to Rocky Desertification Region physical geographic environment, planting sown pasture requirements can be met, select good forage kind that is adaptable, economy and zoology high efficiency, sow protonatomic mass and should meet state quality standard, super quality and competitive price, the cuttage kinds such as hybrid giant napier should pass through quality inspection immunity inspection, nearby for planting;
(4) seed treatment: seeds before seeding must carry out the test such as percentage of seedgermination, cleanliness, impurity elimination process is carried out to the seed bought and ensures emergence rate, the situation that may there is hardseed for the leguminous forage such as Trifolium repense, red clover adopts galling seed coat, warm-cold seed treatment or chemical treatment method, improve seeding quality and germination rate, go awns can take to mill awns and bearder except awns for the gramineous forage grass such as rescuebrome, English ryegrass seed, improve seed quality.Dress seed with appropriate fertilizer and insecticide during sowing, favourable growth of seedling, reduces the destruction of soil pests.It is further noted that the problem of leguminous forage Rhizobium Inoculation, improve its nitrogen fixing capacity;
(5) selection in sowing time: sowing time Main Basis natural conditions, as temperature, moisture etc., but also to consider the situation such as cropping system, kind, labour.Elementary sowing will reach the minimum temperature needed for seed sprouting, and sowing time, temperature rose to more than 5 DEG C and soil moisture content better can be sowed, and sowed in spring in 2 ~ March;
(6) seeding quantity: herbage is correctly sowed very important, it and affect forage yield, also affect sown pasture utilization periods, sowing is few, emerges rare, affects output; Seeding quantity is large, and seedling is too intensive, and impact is grown, and causes meadow to fail in advance, and reduce utilization periods, seeding quantity will consider true value of seeds, physical purity of seed, germination rate etc., and main formulas for calculating is as follows:
The amount of broadcasting during actual sowing rate=true value of seeds 100/true value of seeds
True value of seeds=cleanliness × germination rate
Cleanliness (%)=(sample weight-impurity weight)/sample weight × 100
Germination rate (%)=germinative number grain/confession examination grain number × 100;
(7) sowing depth: sowing depth 1 ~ 10cm, sowing depth depends primarily on grass seed, soil types, soil moisture, soil evaporation condition etc., the sowing depth of general leguminous forage is more shallow than grass family, Rocky Desertification Region soil is shallow, soil water content is low, particularly intensity Rocky Desertification Region soil layer is thinner, and this just requires the process of our great care soil at seeding time, as shown in table 1;
(8) seeding method: adopt clean culture or mixed seeding, for the average annual temperature in Rocky Desertification Region 16 ~ 18 degree, 1500 ~ 1700 kilowatt hours/m
2, frost-free season is greater than 300 days, adopt clean culture hybrid giant napier, Be very effective, for plantation clean culture khuskhus main under bloompepper forest or alfalfa, culture fertility increases nitrogen supply, main employing drilling or broadcast sowing, fragmentary plot adopts bunch planting, dragon fruit underwood planting khuskhus or alfalfa, for dragon fruit increases nitrogen supply, improve nutrient quality, do not advise same grass family mixed seeding in order to avoid it is reducing dragon fruit output to the predation of liquid manure, herbage adopts water-loss reducer to improve Seed viability and leguminous forage inoculation root nodule at seeding time, the same walnut of grass family+leguminous forage+Rosa roxburghii intercropping formation " tall ~ to fill with ~ grass " integrated mode or grass family+leguminous forage is adopted to form " agriculture ~ grass " integrated mode with crop intercropping,
(9) rear suppression topsoil is broadcast, broadcasting rear suppression makes table soil become consolidation, or causes separation layer in the certain depth of top layer, tightens lower void, play soil layer soil moisture conservation effect, suppression can reduce native mesopore, reduces soil water evaporation, tightens up capillary water pipe, Rocky Desertification Region moisture evaporation is strong, after planting suppression is more obviously better than suppression effect before sowing, and being conducive to seed with moistening soil contacts, and is conducive to Seed imbibes, emerges and drought-relief;
(10) field management: meadow, intensity Rocky Desertification Region, particularly the meadow of new planting in early stage must be carried out science precision management and just can be obtained better effects, rationally effective field management, the requisite measure of planting high-yield and high-efficiency sown pasture, field management comprise topdress, irrigate, management of weeds, the extermination of disease and insect pest, managed before the winter, herbage harvesting, auxiliary facility construction;
Topdress: meadow is after planting, get demand due to herbage correspondence constantly to increase, particularly the breeding time of herbage is larger to nutritional need, base fertilizer release is slowly difficult to meet, therefore need to impose fertilizer, topdress main based on quick-acting chemical fertilizer, leguminous forage fertilising should in branch later stage to squaring period and after cradling at every turn, topdress mainly fertile based on P in K fertilizer, executes 25 ~ 75kg/hm
2, also need to apply N seedling stage fertile, 30 ~ 90kg/hm to heading stage and after cradling at every turn, mainly based on N fertilizer, is executed in gramineous forage grass ground after jointing
2, mixed pasture fertilising should based on P fertilizer and K fertilizer, and point minimum two phases fertilising, when pouring water abundant, executed 1 well-rotted farmyard manure, fertilising 7500 ~ 15000kg/hm every 3 ~ 4 years
2;
Irrigate: irrigate and can increase substantially forage yield, water requirement is needed by what arrange that little water cellar retaining can meet the herbage critical period substantially, run into arid when For Herbage Turning Green and water minimum water of once turning green, grass family is from jointing to blooming even milk ripe stage, leguminous forage with the branch later stage to squaring period, can water 1 ~ 2 time, when water source is abundant, water 1 time after cradling at every turn;
Management of weeds: adopt real tillage and cradle immature weeds, the sown pasture harm of weeds to firm planting is very large, particularly perennial grass poor growth is easily gone down by weed competition, the sowing time be applicable to can reduce weeds quantity, sow perennial root ruderal spring and can produce harm to the grass of broadcasting of plantation with other weeds, summer autumn sowing kind then can utilize real tillage to the destruction of weeds, reduce weeds quantity, immature weeds are cradled and also can reduce its harm to lower stubble, carry out necessary chemical weed control according to concrete condition;
The extermination of disease and insect pest: its damage by disease and insect occurred of different cultivar is also not quite similar, mainly implement and " put prevention first, control combine " policy, from seed quarantine to ploughing soil and field management all should be rigid in checking up, mainly containing the prevention and control of field damage by disease and insect at present uses chemicals to prevent and treat, but few as much as possible use reduces it to the pollution of environment, production technology is prevented and treated, just it is cradled before the damage by disease and insect high-incidence season by there being experience, reduce the loss and break out probability with damage by disease and insect, natural enemy is prevented and treated, biological restriction or checking relation in five elements theory is utilized to control some damage by disease and insect, and the improved seeds of plantation disease and insect resistance, reduce damage by disease and insect outburst probability,
The harvesting of herbage: cutting occasion is to the reviviscence of herbage, Cutting and next year yield effect larger, when cradle Main Basis herbage ground biomass breeding time and nutrition dynamic rule, determine in the nutritious total yield of herbage results in the highest period, general picture English ryegrass, Festuca Arundinacea, the gramineous forage grasss such as rescuebrome cradle at heading to initial bloom stage, and leguminous forage initial bloom stage cradle not only to this year and also to next year grass yield and nutritive validity best, Cutting Height is equally to the output of herbage, quality and aftergrass affect very large, general lower numerous grass such as Trifolium repense etc. cradles stubble height at 3 ~ 4cm, top grass is as alfalfa, orchardgrass etc. cradle stubble height at 5 ~ 6cm, cradling toothing for the last time every year should at more than 10cm, be convenient to store nutriment safe overwintering winter.Hua Jiang demonstration area and small stream demonstration area, Salar different time cradle to cause and different cradle frequency, generally utilize in tillering stage, within 1 year, 7 times can be cradled, shooting stage can cradle 6 times, heading stage can cradle 4 times, blooms and the maturing stage can cradle 3 times, because of fewer than small stream demonstration area, Salar about 30 days of Hua Jiang demonstration area frost-free season, and thermal condition reason, Hua Jiang demonstration area can cradle 1 time than small stream demonstration area, Salar usually.
Preferably, above-mentioned a kind of Rocky Desertification Region pasture planting method also comprises grassland improvement, and the grassland degeneration of sown pasture initial planting is comparatively serious, and poisonous and harmful weeds increase rapidly, high quality forage reduces more, grass yield sharply declines, and ecological animal husbandry development is caused to having a strong impact on, should take temporary transient fencing to this, remove poisonous and harmful weeds, after-culture is reseeded and is recovered impaired meadow, now should reducing to herd or prohibit and herd, carrying out herbage compensation by cradling.After-culture mainly reduces according to which kind of herbage of meadow and morely carries out corresponding after-culture and cuttage, carry out after after-culture watering or carrying out increase survival rate after the rain, according to stony desertification grassland degeneration form, take corresponding ameliorative measure, stony desertification degraded mixed-sown grassland after-culture measure as shown in table 2.
Claims (8)
1. a Rocky Desertification Region pasture planting method, is characterized in that: comprise the following steps:
(1) stony desertification divided rank: according to 0.2km
2the exposed rate of figure porphyry stone, 0.2km
2stony desertification grade is drawn in the situation calibration soil of figure spot vegetation, the capped rate of soil;
(2) screening of herbage: filter out drought resisting, cold resistance is strong, resistance is stronger herbage;
(3) soil prepares: need thoroughly to remove injurious weed, soil cultivation before planting sown pasture, use base fertilizer;
(4) seed treatment: impurity elimination, adopt galling seed coat, warm-cold seed treatment or chemical treatment method, go awns, fertilizer and insecticide are dressed seed;
(5) selection in sowing time: sowing time, temperature rose to more than 5 DEG C, sowed in spring in 2 ~ March;
(6) seeding quantity: main formulas for calculating is as follows:
The amount of broadcasting during actual sowing rate=true value of seeds 100/true value of seeds
True value of seeds=cleanliness × germination rate
Cleanliness (%)=(sample weight-impurity weight)/sample weight × 100
Germination rate (%)=germinative number grain/confession examination grain number × 100;
(7) sowing depth: sowing depth 1 ~ 10cm;
(8) seeding method: adopt clean culture or mixed seeding;
(9) rear suppression topsoil is broadcast;
(10) field management: field management comprise topdress, irrigate, management of weeds, the extermination of disease and insect pest, managed before the winter, herbage harvesting, auxiliary facility construction.
2. a kind of Rocky Desertification Region as claimed in claim 1 pasture planting method, is characterized in that: the use steriland herbicide that weeds a garden in described step (3); Described soil cultivation can be carried out ploughing soil in the place of more than soil thickness 20cm, rakes the soil level, a kind of farm tools ground, suppression, will along hillside fields contour when sowing or cuttage herbage, and undertaken broadcasting sowing by land occupation condition or bunch planting control lines distance, can take no-tillage system at below soil thickness 20cm, bunch planting is planted; Described base fertilizer of using is based on fertilizer, employing is become thoroughly decomposed fertilizer, deep placement is wanted during fertilising, layering is executed, multiple fertilizer mixing is executed, farmers' made compost before turning over or green manure and slow release chemical fertilizer evenly spread by arable land, below soil layer of being turned over to when ploughing, base manure combines with autumn ploughing and applies 15000 ~ 30000kg/hm
2.
3. a kind of Rocky Desertification Region as claimed in claim 1 pasture planting method, is characterized in that: the seeding method in described step (8), for the average annual temperature in Rocky Desertification Region 16 ~ 18 degree, and 1500 ~ 1700 kilowatt hours/m
2frost-free season is greater than 300 days, adopt clean culture hybrid giant napier, for plantation clean culture khuskhus main under bloompepper forest or alfalfa, main employing drilling or broadcast sowing, fragmentary plot adopts bunch planting, dragon fruit underwood planting khuskhus or alfalfa, improve nutrient quality, herbage adopts water-loss reducer to improve Seed viability and leguminous forage inoculation root nodule at seeding time, adopts the same walnut of grass family+leguminous forage+Rosa roxburghii intercropping formation " tall ~ to fill with ~ grass " integrated mode or grass family+leguminous forage to form " agriculture ~ grass " integrated mode with crop intercropping.
4. a kind of Rocky Desertification Region as claimed in claim 1 pasture planting method, it is characterized in that: topdressing in described step (10), topdress main based on quick-acting chemical fertilizer, leguminous forage fertilising should in branch later stage to squaring period and after cradling at every turn, topdress mainly fertile based on P in K fertilizer, executes 25 ~ 75kg/hm
2, also need to apply N seedling stage fertile, 30 ~ 90kg/hm to heading stage and after cradling at every turn, mainly based on N fertilizer, is executed in gramineous forage grass ground after jointing
2, mixed pasture fertilising should based on P fertilizer and K fertilizer, and point minimum two phases fertilising, when pouring water abundant, executed 1 well-rotted farmyard manure, fertilising 7500 ~ 15000kg/hm every 3 ~ 4 years
2.
5. a kind of Rocky Desertification Region as claimed in claim 1 pasture planting method, it is characterized in that: the irrigation in described step (10), run into arid when For Herbage Turning Green and water minimum water of once turning green, grass family is from jointing to blooming even milk ripe stage, leguminous forage with the branch later stage to squaring period, can water 1 ~ 2 time, when water source is abundant, water 1 time after cradling at every turn.
6. a kind of Rocky Desertification Region as claimed in claim 1 pasture planting method, is characterized in that: the management of weeds in described step (10), adopts real tillage and cradles immature weeds.
7. a kind of Rocky Desertification Region as claimed in claim 1 pasture planting method, it is characterized in that: the harvesting of the herbage in described step (10), lower numerous grass cradles stubble height at 3 ~ 4cm, and top grass cradles stubble height at 5 ~ 6cm, and cradling toothing every year for the last time should at more than 10cm.
8. a kind of Rocky Desertification Region as claimed in claim 1 pasture planting method, it is characterized in that: also comprise grassland improvement, take temporary transient fencing, remove poisonous and harmful weeds, after-culture is reseeded and is recovered impaired meadow, reducing and herd or prohibit and herd, carrying out herbage compensation by cradling, after-culture mainly according to which kind of herbage of meadow reduces and morely carries out corresponding after-culture and cuttage.
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