CN110249933A - A kind of cultural method of open country winter rape stubble multiple cropping sorghum - Google Patents
A kind of cultural method of open country winter rape stubble multiple cropping sorghum Download PDFInfo
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- CN110249933A CN110249933A CN201910597247.9A CN201910597247A CN110249933A CN 110249933 A CN110249933 A CN 110249933A CN 201910597247 A CN201910597247 A CN 201910597247A CN 110249933 A CN110249933 A CN 110249933A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/15—Leaf crops, e.g. lettuce or spinach
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/20—Cereals
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Abstract
The invention belongs to gardening；The technical field of cultivation of vegetables, disclose a kind of cultural method of open country winter rape stubble multiple cropping sorghum, the cultural method of the open country winter rape stubble multiple cropping sorghum include: selection topography is flat, soil layer is deep, the soil is porous, in fertility on, soil physical and chemical property is good, retain water and nutrients ability is strong, the gradient is in 15 degree of multiple cropping plot below；Timely autumn site preparation；Fertilising carries out soil disinfection；Breeding is selected, date of seeding is early June；Sorghum planter with hand propelled with press wheel；After planting suppression in time；As 10 ㎝ of sorghum height of seedling, 5~6 leaf Shi Dingmiao, the standard of thinning final singling be stay go greatly it is small, prevent or cure a disease it is weak, stay it is even stay it is strong；The sorghum variety of 110 days stubble multiple cropping breeding times of winter rape, Shi Shui fertilising；Disease pest and weed prevention and treatment；It is harvested in early October；Mechanical harvest is harvested using crawler-type harvester or the place without machine harvest is using the method for manually stalk being stayed to cut fringe, is spread and is shone 2d~3d, using thresing machine threshing.
Description
Technical field
The invention belongs to gardening；The technical field of cultivation of vegetables more particularly to a kind of open country winter rape stubble multiple cropping sorghum
Cultural method.
Background technique
Currently, the immediate prior art:
Multiple cropping technology plants the crops such as buckwheat, soya bean after being concentrated mainly on winter wheat harvest at present, and multiple cropping is this kind of to make produce
Measure low, economic benefit is low, and mechanized cultivation level is not high, while the drought resistance of buckwheat, soya bean is poor, encounters extreme weather, yield
It is difficult to ensure.These problems can solve using rape stubble multiple cropping sorghum technology.Sorghum is a kind of drought-enduring, barren-resistant, high yield, machine
The high cereal crops of tool plantation level, for the invention patent using breeding time at 100 days or so, plant height is 120 centimetres or so
Cold region apple early-maturing variety meets do mechanization operation as multiple cropping first choice crop.Rape stubble multiple cropping sorghum, the yield of sorghum can be with
Reach 400-500 kilograms, produces the left and right that is worth 1000 yuan.
In conclusion problem of the existing technology is:
(1) mechanization degree is low, it is difficult to realize entire mechanization.
(2) multiple crops low output, economic benefit are low.
(3) multiple crops resistance is poor, it is difficult to meet one's respective area multiple cropping weather.
Solve the difficulty of above-mentioned technical problem:
The Breeding and popularization of Cold region apple mechanization sorghum variety is the key that the cultivation technique of rape stubble multiple cropping sorghum.
Solve the meaning of above-mentioned technical problem:
Preferred crop of the present invention by using Cold region apple mechanization sorghum variety as rape stubble multiple cropping is one's respective area
Multiple cropping tillage system reform provides a kind of new model, greatly improves multiple cropping economic benefit, realizes entire mechanization.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of cultivation sides of open country winter rape stubble multiple cropping sorghum
Method.
The invention is realized in this way a kind of cultural method of open country winter rape stubble multiple cropping sorghum, the open country winter rape
Stubble multiple cropping sorghum cultural method include:
The first step, select topography is flat, soil layer is deep, the soil is porous, in fertility on, soil physical and chemical property is good, water conservation
Fertilizer-preserving ability is strong, the gradient is in 15 degree of multiple cropping plot below；Timely autumn site preparation；Fertilising carries out soil disinfection；
Second step selects breeding, and date of seeding is early June；Sorghum planter with hand propelled with press wheel；In time after planting
Suppression；
Third step, as 10 ㎝ of sorghum height of seedling, 5~6 leaf Shi Dingmiao, the standard of thinning final singling be stay go greatly it is small, prevent or cure a disease
It is weak, stay it is even stay it is strong；The sorghum variety of 110 days stubble multiple cropping breeding times of winter rape, Shi Shui fertilising；Disease pest and weed prevention and treatment；
4th step, is harvested in early October；Mechanical harvest is harvested using crawler-type harvester or without machine harvest
It spreads using the method for manually staying stalk to cut fringe and shines 2d~3d, using thresing machine threshing in place.
Further, the first step specifically includes: it deep ploughs in time stubble-cleaning after preceding crop harvest, tilling depth reaches 25~
30cm harrows a kind of farm tools in time after ploughing；It deep ploughs stubble-cleaning after winter rape harvest at the beginning of 6 months, prepares for multiple cropping sorghum in time；
Timely autumn site preparation is wanted after early June winter rape harvest, stubble-cleaning, ploughs 20cm at Shi Nongfei；
Mu applies high-quality 3000~5000kg of well-rotted farmyard manure, is uniformly sprinkling upon earth's surface before site preparation, carries out rotation ground；Mu applies purity nitrogen 12
~15kg, 6~8kg of phosphorus pentoxide, 7~10kg of potassium oxide roll over 25~30kg of urea, 50~70kg of calcium superphosphate, potassium sulfate
15~20k.In addition to nitrogenous fertilizer stays 30-40% to make manuring late；
40% phoxim emulsifiable concentrate 0.5kg refinement sandy soil 30kg is used per acre when rotation ground, pesticide-clay mixture is mixed and spreads fertilizer over the fields, or is watered 50kg spray
It applies；Every sprayed after 1 band covers sprays next band again.
Further, the second step specifically includes: seed selection is basked seeds, and seed is carried out selection by winnowing or screening before broadcasting, it is big to select grain
It is full to plant, and bask seeds 3-5 days；Presoaking and germinating, with 55 DEG C water seed soaking 3-5 minutes, sowed after airing；Dressing seed adopts first
Base thiophanate is coated prevention and treatment smut and subterranean pest-insect in conjunction with seed coat agent；
Application rate, precocious Cold region apple kind kind of a 1.5-2kg/667m2；With the every cave 2 of hand propelled dibbler precision drilling
~3 seeds, 2.5~3 centimetres of depth of planting, 0.5~0.8 kilogram of the mu amount of broadcasting；
Type of seeding, it is 6-8cm that seeder duckbilled, which is tuned into spacing in the rows, and every bunch planting kind 2-3, line-spacing is 40cm~60cm,
Depth of planting 3cm~4cm；Per hectare application rate 15kg；
Multiple cropping sorghum density is determined according to rape stubble soil fertility and condition of raining, and density is with 15000--18000
Plant/acre.
Further, the third step specifically includes: 38% atrazine suspending agent 250Lm of weeds is watered 30-45kg/667
The full field ㎡ is spraying；Or 72% isopropyl methoxalamine missible oil 90Lm, it is spraying to be watered the full field 30-45kg/667 ㎡；Or 96% smart isopropyl first
It is spraying to be watered the full field 30-45kg/667 ㎡ by careless amine missible oil 70Lm.
In conclusion advantages of the present invention and good effect are as follows: Regional environmental quality should meet wanting for NY/T391-2000
It is subordinate to.
Existing multiple crops is compared with rape stubble multiple cropping sorghum Specifications
| The key technical indexes | Existing multiple cropping technology | Winter rape stubble multiple cropping sorghum |
| Crop species | Buckwheat, soya bean | Cold region apple mechanization sorghum |
| Seeding method | Manually | Mechanization |
| Drought resistance | Generally | By force |
| Yield | Low (200 kilograms) | High (500 kilograms) |
| Application rate | Greatly | 1 kg/acre |
The cultivation technique for the rape stubble multiple cropping Cold region apple mechanization sorghum that the present invention uses meets one's respective area multiple cropping and ploughs
Under the conditions of operation mode, long-term cropping tradition is single, low output, planting mechanization degree is low, farmer's plantation enthusiasm is not high
Status.The present invention has started the precedent of one's respective area winter rape stubble multiple cropping Cold region apple mechanization sorghum, after solving rape harvest
The idle status in soil, realizes the tillage system reform of two crops a year.The present invention changes traditional agriculture cropping pattern, realizes complete
Journey mechanized cultivation technology mode.This research select multiple crops for the breeding of crop institute, academy of agricultural sciences, Jilin Province Cold region apple machine
Tool sorghum variety Ji miscellaneous 140, has filled up status of the rape stubble without suitable Cultivation in Multiple Cropping Systems.The present invention changes one's respective area and there was only the winter
Wheat-buckwheat, winter wheat-soya bean tillage system reform form the completely new winter rape-Cold region apple mechanization sorghum of one kind and answer
Kind mode.
Detailed description of the invention
Fig. 1 is the cultural method flow chart of open country winter rape stubble multiple cropping sorghum provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
The present invention provides production environment, adapted varieties, the Main Cultivation administrative skill of open country winter rape stubble multiple cropping sorghum,
Suitable for Gansu Province winter rape stubble multiple cropping sorghum.
Application principle of the invention is explained in detail with reference to the accompanying drawing.
As shown in Figure 1, the cultural method of open country winter rape stubble multiple cropping sorghum provided in an embodiment of the present invention includes following step
It is rapid:
S101: selection topography is flat, soil layer is deep, the soil is porous, in fertility on, soil physical and chemical property is good, water conservation is protected
Fertile ability is strong, the gradient is in 15 degree of multiple cropping plot below；Timely autumn site preparation；Fertilising carries out soil disinfection；
S102: breeding is selected, date of seeding is early June；Sorghum planter with hand propelled with press wheel；After planting timely town
Pressure；
S103: as about 10 ㎝ of sorghum height of seedling, 5~6 leaf Shi Dingmiao, the standard of thinning final singling be stay go greatly it is small, prevent or cure a disease
It is weak, stay it is even stay it is strong；The sorghum variety of 110 days or so winter rape stubble multiple cropping breeding time, Shi Shui fertilising；Disease pest and weed prevention and treatment；
S104: it is harvested in early October；Mechanical harvest is harvested using crawler-type harvester or the ground without machine harvest
The method that Fang Caiyong manually stays stalk to cut fringe spreads and shines 2d~3d, using thresing machine threshing.
Application principle of the invention is further described combined with specific embodiments below.
1 home environment
1.1 Regional environmental quality
Regional environmental quality should meet being subordinate to for NY/T391-2000.
1.2 weather conditions
7 DEG C~10 DEG C of average temperature of the whole year, >=10 DEG C of accumulated temperature is not less than 2500 DEG C, frost-free period 150d~180d.Year precipitation
Measure 300~600mm.
2 pesticides, fertilizer and plant growth regulator requirement
Pesticide, fertilizer answer the production of strict implement NY/T 391-2000, NY/T 393-2000, NY/T 394-2000
Technical specification.Organic fertilizer, complex fertilizer and water soluble fertilizer are by the regulation in table 1, table 2, table 3.
1 organic fertilizer technical indicator of table
2 organic-inorganic complex fertilizer of table, compound (conjunction) fertilizer technology index
3 water soluble fertilizer of table (phosphorus potash fertilizer, nitrogenous fertilizer) technical indicator
| Project | Index |
| Total arsenic (As) (dry radix) | ≤50(mg.kg-1) |
| Total cadmium (Cd) (dry radix) | ≤10(mg.kg-1) |
| Total lead (Pb) (dry radix) | ≤200(mg.kg-1) |
| Total chromium (Cr) (dry radix) | ≤500(mg.kg-1) |
| Total mercury (Hg) (dry radix) | ≤5(mg.kg-1) |
3 cultivation techniques
The selection of 3.1 multiple cropping plot
Winter rape plantation should select topography is flat, soil layer is deep, the soil is porous, in fertility on, soil physical and chemical property is good,
Retain water and nutrients ability is strong, the gradient is in 15 degree of plot below, steep hillslope, chad should not be selected, geavy salt alkali etc. barrenly.Preceding
It deep ploughs in time stubble-cleaning after stubble crop harvest, tilling depth reaches 25~30cm, rake a kind of farm tools in time after ploughing.Preceding stubble with beans, wheat, corn,
Potato, tobacco are preferably.Most avoid continuous cropping.It deep ploughs stubble-cleaning after winter rape harvest at the beginning of 6 months, prepares for multiple cropping sorghum in time.
3.2 site preparation
Timely autumn site preparation is wanted after early June winter rape harvest, it should stubble-cleaning, Shi Nongfei, plough 20cm or so.It carries out in time
Rotation ground makes soil reach thin, warm and sunny, flat, defincienct in the upper and excessive in the lower.It creates conditions for multiple cropping sorghum sowing in time.
3.3 fertilising
General mu applies high-quality 3000~5000kg of well-rotted farmyard manure, is uniformly sprinkling upon earth's surface before site preparation, carries out rotation ground.Mu is applied pure
12~15kg of nitrogen, 6~8kg of phosphorus pentoxide, 7~10kg of potassium oxide roll over 25~30kg of urea, 50~70kg of calcium superphosphate, sulphur
Sour 15~20k of potassium.In addition to nitrogenous fertilizer stays 30-40% to make manuring late.
3.4 soil disinfection
Subterranean pest-insect is caused harm serious plot, and when rotation ground uses 40% phoxim emulsifiable concentrate 0.5kg refinement sandy soil 30kg per acre, is mixed
It is spread fertilizer over the fields at pesticide-clay mixture, or is watered 50kg and sprays.Every sprayed after 1 band covers sprays next band again, to improve drug effect.
4 seed preparations
4.1 select breeding
The condition that illumination is sufficient after being harvested according to winter rape, precipitation is abundant, selects the stubble multiple cropping of early June winter rape, October
The kind of the first tenday period of a month harvest selects to adaptation to local conditions to be authorized strong breeding time 110 days or so of the high-quality of popularization, high yield, resistance
Cold region apple kind.The cold Humid Area river water of High aititude, should select to mountain plateau breeding time short kind.Seed quality meets GB
4404.1 foodstuff seed Cereal corresponding seed quality criterias.Such as lucky miscellaneous 140, imperial miscellaneous 18, logical early No. 2 kinds.
4.2 percentages of seedgermination are planted in 95% or more Shi Caineng.Seed selection is basked seeds, and seed is carried out selection by winnowing or screening before broadcasting,
Select grain it is big it is full plant, and bask seeds 3-5 days, germinateing after broadcasting, fast, emergence rate is high, emergence is neat, robust growth.Presoaking and germinating,
With 55 DEG C water seed soaking 3-5 minutes, sowed after airing, play the role of increasing moisture in the soil and keep a full stand of seedings and controlling disease.Dressing seed adopts methyl support
Cloth saliva is coated prevention and treatment smut and subterranean pest-insect etc. in conjunction with seed coat agent.
4.3 sowing
4.3.1 the sowing time
After general winter rape harvest can grab moisture sowing, optimum date of seeding is that early June is most appropriate.
4.3.2 application rate
Determination is comprehensively considered according to percentage of seedgermination, site preparation quality, soil temperature and humidity, subterranean pest-insect situation of the harm.It is precocious
Cold region apple kind general recommendations kind of a 1.5-2kg/667m2.If with 2~3, every cave of hand propelled dibbler precision drilling kind
Son, 2.5~3 centimetres of depth of planting, 0.5~0.8 kilogram of the mu amount of broadcasting (1.5~2.5 ten thousand).
4.3.3 type of seeding
Rape stubble multiple cropping grain sorghum such as generally uses at the line-spacings machinery semi-accuracy seeding, generally with hand propelled with press wheel
Sorghum planter, it is 6-8cm that seeder duckbilled, which is tuned into spacing in the rows, and every bunch planting kind 2-3, line-spacing is 40cm~60cm, and sowing is deep
3cm~4cm is spent, application rate should be determined according to germination percentage, site preparation soil moisture content quality of seed etc..General per hectare application rate 15kg.
After planting suppression in time, is in close contact with the soil seed, promotes seed water suction germination, can reinforce improving soil moisture, in favor of seed hair
Bud.
4.3.4 rational close planting
Multiple cropping sorghum density is determined according to rape stubble soil fertility and condition of raining.Density is with 15000--18000
Plant/acre it is advisable, the higher plot of fertility can suitably increase planting density.
5 field management
5.1 seedling management
It after planting such as rain before emergence, easily causes part hardened, deformity seedling occurs, should abolish in time hardened, help seedling unearthed,
To protect strong sprout.Seedling is looked into after emergence in time to fill a vacancy, to save seedling from damage.When about 10 ㎝ of sorghum height of seedling, 5~6 leaf Shi Dingmiao, thinning final singling
Standard be stay go greatly it is small, prevent or cure a disease it is weak, stay it is even stay it is strong.Sorghum drought tolerance is strong, and seedling stage preferably restrains the growth of seedlings, and to hoe the fields during restraining the growth of seedlings more,
Diligent intertillage.In conjunction with thinning in 3-4 ㎝ of deep hoe in the ranks, horizontal hoe, rhizosphere are shallowly uprooted between strain, and 8-9 leaf direct motions are intertilled deeply, in favor of soil moisture conservation
Temperature raising, root of hair strong sprout mitigate Weed infestation.
5.2 middle and later periods management
The sorghum variety of 110 days or so winter rape stubble multiple cropping breeding time is grown after the jointing stage rapidly, until full heading time
Between, it is the period for needing water to need fertilizer most, still needs to certain rich water after loose powder, method is attacked in utilization three: being attacked stalk, is attacked fringe, attacks grain.With true
Protect main fringe early maturing and high yield.
It attacks and applies stalk fertilizer, it is ensured that dense planting kind grows fine early period, lays the foundation for later period reproductive growth.Base fertilizer it is sufficient or
Applied seed manure, growth of seedling it is healthy and strong it is necessary to chasing after less or evening chases after；If base fertilizer is poor, quantity is few, seedling seem fertilizer deficiency when it is necessary to more
It chases after or early chases after.Generally 6-7 leaves be unfolded when impose, top dressing based on available nitrogen, the amount of applying no more than top dressing total amount 20-
30%.
Shi Suifei, multiple cropping sorghum jointing to the period for being nutrient growth and reproductive growth while going forward side by side of earing are attacked, and is needed
The period that fertilizer needs water most should firmly grasp and impose ear manuer, and nitrogenous fertilizer topdressing amount is generally 20-the 40% of top dressing total amount, and the time usually exists
Trumpet period (14 leaves~15 leaf boot stages) carries out.
Granules application fertilizer is attacked, according to field sorghum growing state, adds granulated fertilizer in time, guarantees later period not de- fertilizer, extends blade
Functional period avoids conducting system early ageing, is conducive to the manufacture of nutrient and effectively transports to seed, makes full seed, obtain high
It produces.Topdressing amount is the 10% of total topdressing amount at this time.
The prevention and treatment of 5.3 disease pest and weeds
Sorghum pest and disease damage and its control method are shown in Table 4.
Table 4
Crop smothering: the serious plot of Weed infestation is watered the full field 30-45kg/667 ㎡ with 38% atrazine suspending agent 250Lm
It is spraying；Or 72% isopropyl methoxalamine missible oil 90Lm, it is spraying to be watered the full field 30-45kg/667 ㎡；Or 96% S-metolachlor cream
It is spraying to be watered the full field 30-45kg/667 ㎡ by oily 70Lm.
6 harvest in due course
Sorghum harvest is wax ripeness latter stage, at this time full seed, and content of starch is high, is generally received in early October
It obtains.It is after autumn overcast and rainy at a time when this, harvest should be firmly grasped.Mechanical harvest is harvested using Kubo field crawler-type harvester or is harvested without machine
Place using the method for manually staying stalk to cut fringe, spread and shine 2d~3d, using thresing machine threshing.
7 establish Product archives
Record the correlations such as production base environment, production technology, the prevention and control of plant diseases, pest control, harvesting, transport, processing, storage and detection
Content.
The technology of the present invention is responsible for promoting demonstration by Gansu Province Jingchuan County seed control station, the agrotechnical center in Lingtai County, using this
Item technology significantly increases economic benefit, the deep welcome by farmer.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (4)
1. a kind of cultural method of open country winter rape stubble multiple cropping sorghum, which is characterized in that the open country winter rape stubble multiple cropping sorghum
Cultural method include:
The first step, select topography is flat, soil layer is deep, the soil is porous, in fertility on, soil physical and chemical property is good, retain water and nutrients
Ability is strong, the gradient is in 15 degree of multiple cropping plot below；Timely autumn site preparation；Fertilising carries out soil disinfection；
Second step selects breeding, and date of seeding is early June；Sorghum planter with hand propelled with press wheel；After planting timely town
Pressure；
Third step, as 10 ㎝ of sorghum height of seedling, 5~6 leaf Shi Dingmiao, the standard of thinning final singling be stay go greatly it is small, prevent or cure a disease it is weak, stay
It is even stay it is strong；The sorghum variety of 110 days stubble multiple cropping breeding times of winter rape, Shi Shui fertilising；Disease pest and weed prevention and treatment；
4th step, is harvested in early October；Mechanical harvest is harvested using crawler-type harvester or the place without machine harvest
Using the method for manually staying stalk to cut fringe, spreads and shine 2d~3d, using thresing machine threshing.
2. the cultural method of open country winter rape stubble multiple cropping sorghum as described in claim 1, which is characterized in that the first step tool
Body includes: stubble-cleaning of deep ploughing in time after preceding crop harvest, and tilling depth reaches 25~30cm, harrows a kind of farm tools after ploughing in time；Winter rape at the beginning of 6 months
It deep ploughs after harvest stubble-cleaning, prepares for multiple cropping sorghum in time；
Timely autumn site preparation is wanted after early June winter rape harvest, stubble-cleaning, ploughs 20cm at Shi Nongfei；
Mu applies high-quality 3000~5000kg of well-rotted farmyard manure, is uniformly sprinkling upon earth's surface before site preparation, carries out rotation ground；Mu apply purity nitrogen 12~
15kg, 6~8kg of phosphorus pentoxide, 7~10kg of potassium oxide roll over 25~30kg of urea, 50~70kg of calcium superphosphate, potassium sulfate 15
~20k；In addition to nitrogenous fertilizer stays 30-40% to make manuring late；
40% phoxim emulsifiable concentrate 0.5kg refinement sandy soil 30kg is used per acre when rotation ground, is mixed pesticide-clay mixture and is spread fertilizer over the fields, or is watered 50kg and sprays；
Every sprayed after 1 band covers sprays next band again.
3. the cultural method of open country winter rape stubble multiple cropping sorghum as described in claim 1, which is characterized in that the second step tool
Body includes: that seed selection is basked seeds, and seed is carried out selection by winnowing or screening before broadcasting, select grain it is big it is full plant, and bask seeds 3-5 days；Seed soaking is urged
Bud, with 55 DEG C water seed soaking 3-5 minutes, sowed after airing；Dressing seed adopts thiophanate methyl, is coated and prevents and treats in conjunction with seed coat agent
Smut and subterranean pest-insect；
Application rate, precocious Cold region apple kind kind of a 1.5-2kg/667m2；With 2~3, the every cave of hand propelled dibbler precision drilling
Seed, 2.5~3 centimetres of depth of planting, 0.5~0.8 kilogram of the mu amount of broadcasting；
Type of seeding, it is 6-8cm that seeder duckbilled, which is tuned into spacing in the rows, and every bunch planting kind 2-3, line-spacing is 40cm~60cm, sowing
Depth 3cm~4cm；Per hectare application rate 15kg；
Multiple cropping sorghum density is determined according to rape stubble soil fertility and condition of raining, and density is with 15000--18000 plants/acre.
4. the cultural method of open country winter rape stubble multiple cropping sorghum as described in claim 1, which is characterized in that the third step tool
Body includes: 38% atrazine suspending agent 250Lm of weeds, and it is spraying to be watered the full field 30-45kg/667 ㎡；Or 72% isopropyl methoxalamine
It is spraying to be watered the full field 30-45kg/667 ㎡ by missible oil 90Lm；Or 96% S-metolachlor missible oil 70Lm, it is watered 30-45kg/667
The full field ㎡ is spraying.
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| CN111528011A (en) * | 2020-05-18 | 2020-08-14 | 四川省农业科学院水稻高粱研究所 | No-tillage direct seeding method for original-nest sorghum after rape harvesting |
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