CN103168606B - Method for cultivating broccoli in greenhouse at high yield and high efficiency - Google Patents

Method for cultivating broccoli in greenhouse at high yield and high efficiency Download PDF

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Publication number
CN103168606B
CN103168606B CN201310130631.0A CN201310130631A CN103168606B CN 103168606 B CN103168606 B CN 103168606B CN 201310130631 A CN201310130631 A CN 201310130631A CN 103168606 B CN103168606 B CN 103168606B
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booth
broccoli
film
temperature
seedling
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CN103168606A (en
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秦文斌
王贝芳
戴忠良
吴国平
姚悦梅
潘永飞
张振超
孙春青
肖燕
王伟
刘小凤
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JURONG BAITU TOWN MIAOGAN VEGETABLE SEEDS PROFESSIONAL COOPERATIVES
Zhenjiang Ruifan Agricultural Gardening Co Ltd
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JURONG BAITU TOWN MIAOGAN VEGETABLE SEEDS PROFESSIONAL COOPERATIVES
Zhenjiang Ruifan Agricultural Gardening Co Ltd
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Abstract

The invention relates to a method for cultivating broccoli in a greenhouse at high yield and high efficiency. The method comprises the steps of: preparing a seedling bed; implementing plug seedling in tray; implementing seedling management; preparing a land and applying a fertilizer; planting; implementing field management; preventing and controlling diseases and insect damages; adjusting temperature and humidity; reasonably closing or opening front and the back films of the greenhouse, a small arched shed thin film and two front doors of the greenhouse according to data of the temperature and the humidity in the greenhouse as well as weather conditions during the early budding period of the broccoli; and harvesting, and the like. The method has the beneficial effects that the harvesting period of the broccoli can be manually controlled by utilizing the sensitivity of buds in a developmental period to the temperature, so that the broccoli can be sold in the market around the Spring Festival, so that a high economic benefit can be obtained; simultaneously, the quality of the broccoli is improved and the production value per mu is high; and standardized pollution-free greenhouse cultivation is realized.

Description

A kind of cultivation method of booth broccoli high-yield and high-efficiency
Technical field
The present invention relates to a kind of cultivation method of broccoli, especially a kind of cultivation method of booth broccoli high-yield and high-efficiency, belongs to field of plant growing technology.
Background technology
Broccoli (Broccoli) also known as Broccoliflorets, broccoli, the mutation that to belong in Cruciferae Brassica genus brassica specie be product with green bouquet and the tender scape of fertilizer.Broccoli is nutritious, and local flavor is good, and green constant after the cooking, delicate fragrance is tender, suitablely to boil, fries, cold and dressed with sauce, freezing.American-European wait state's research to think, broccoli contains cancer-resisting substance, often edible can anti-cancer in advance, reduction cancer morbidity, is described as high-grade health-care vegetable, sells well.Along with the raising of living standards of the people, constantly strengthen the consciousness of nutrition and health care, broccoli is familiar with by consumers in general gradually, and cultivated area, consumption figure expand year by year.Broccoli is very not strict to the requirement of illumination, but in its process of growth, like sufficient illumination, plant meeting robust growth during illumination foot, form powerful trophosome, be conducive to the accumulation of photosynthesis and nutrient, and making bouquet consolidation fine and close, green in color quality is better, but sunlight was crossed and was also unfavorable for growing of broccoli by force midsummer.It is 15-18 DEG C that broccoli curd grows thermophilic, and temperature is bad higher than Head quality mutability when 25 DEG C, Yi Maohua, and quality declines, but only otherwise endure cold evil, bouquet 5 DEG C even below low temperature still can slowly grow.At present, Jiangsu Province broccoli is produced main based on autumn and winter, the listing phase is in March in late October to next year, all the other times need introduce from the other places such as Fujian or Gansu, but existing broccoli plantation is generally common species method for planting, and be only utilize greenhouse gardening to regulate the harvest time of bouquet, this planting patterns obtains vegetables, and not only mouthfeel is bad, also easily fall ill in growth, output is lower.
Summary of the invention
The technical problem to be solved in the present invention is the defect existed according to prior art, proposes the cultivation method of high, the profitable booth broccoli high-yield and high-efficiency of a kind of output.
The present invention is technical solution problem by the following technical programs, and a kind of cultivation method of booth broccoli high-yield and high-efficiency, comprises the following steps:
Step one, seedling bed prepare, and select high-land, ventilating cool, and irrigation and drainage are convenient, and booth is built in the plot that the soil is porous, and on booth, cover silver gray sunshade net and 20 order fly nets, and Insect preventing sunshade net needs full canopy to cover;
Step 2, point disk seedling growing, adopt broccoli seeds that 72 holes dishes carry out sowing, nursery, and by film cover on the disk cover of cave;
Step 3, seedling management, sow after within 2 ~ 3 days, emerging, and choosing has the solar time to remove covering, rice shoot is allowed fully to see light, when extraneous (booth is outer) temperature is more than 30 DEG C, booth is covered sunshade net to avoid canopy temperature too high, thinning when seedling grows to 1 ~ 2 true leaf;
Step 4, site preparation and fertilization, level land, and applies base manure, every 667 ㎡ execute decomposed dung 3000kg, Nitrogen, Phosphorus and Potassium 75kg, boron fertilizer 1kg, fertiliser containing magnesium 1kg, then turn over and bury, mix with soil, make the flat furrow of shallow ridges of wide 1.2 ~ 1.5m, ditch depth 10 ~ 15cm, furrow width 25 ~ 30cm, booth external-open is wider than 30cm, deeply be greater than the drain ditch of 40cm, prevent the occluded water in the outer pin ditch of canopy when raining heavyly from penetrating into booth;
Step 5, field planting, carry out field planting the dusk of choosing cloudy day or fine day, by the distance between rows and hills of 40 × 35, seedling moved to land for growing field crops;
Step 6, field management, water normal root water in time after field planting, and moisten soil 2 ~ 4 times, to keep ground moistening in broccoli heading stage drip irrigation, field planting is carried out first time and is topdressed after 7 days, every 667 ㎡ execute urea 1.5kg, potassium chloride 1kg, carry out second time and topdress after topdressing 10 days for the first time, every 667 ㎡ execute urea 5kg, potassium chloride 3kg, carried out 1 ~ 2 time according to plant growth condition every 10 days later and topdresses, and its fertilizing type is identical with second time fertilizing type;
Step 7, prevention and elimination of disease and pests, utilize 75% tpn wetting powder, 800 times of liquid or 70% mancozeb, 500 times of liquid, spray in every 7 ~ 10 days 1 time, connect spray and prevent and treat damping off, downy mildew and black rot 2 ~ 3 times, utilize 10% imidacloprid wettable powder, 600 times of liquid, 5% flufenoxuron missible oil 700 times liquid or 5% UC 62644 missible oil 800 times alternately prevent and treat diamond-back moth, cabbage caterpillar and aphid;
Step 8, adjustment temp. and humidity, at broccoli early squaring, according to temp. and humidity data and weather condition in booth, rationally close or open booth full front of a Chinese gown film, Small plastic shed film and booth two main entrance;
Step 9, to gather, when the edge small bud of the main bouquet of broccoli is slightly loose, bouquet is cut off at scape 3cm place together with lower bands scape.
The present invention's further technical solution problem by the following technical programs: also have between step one and step 2 select broccoli kind and according to and cauliflower needs listing date to determine the sowing time.In described step 2, there is the vegetables special nutrient soil purchased from Shanghai Denmark Pin Shi in 72 hole dishes.If at the cloudy day, remove sunshade net to keep the moistening of soil, and cover film covering is coiled in cave by Yu Yuqian, prevents rain drop erosion seedbed in described step 3.Within before field planting 1 week in described step 5, progressively remove covering to practice seedling, described field planting selects the seedling age of seedling to be 28 ~ 32 days.
Described fertilizing type is executed urea and the water-soluble rear pouring of potassium chloride, the composite fertilizer of described Nitrogen, Phosphorus and Potassium to be N:P:K be 15:15:15.
In described step 8, if weather wet weather is cloudy, when day temperature is 3 ~ 5 DEG C, by booth full front of a Chinese gown film, Small plastic shed film and booth two main entrance Close All; If extraneous minimum temperature 2 ~ 3 DEG C, maximum temperature more than 10 DEG C, during wind-force 4 ~ 5 grades, booth full front of a Chinese gown film and booth two main entrance are opened 5 ~ 7 hours by daytime, and Small plastic shed film is closed; If canopy temperature is 18 ~ 20 DEG C during the same day 11, booth full front of a Chinese gown film and booth two main entrance were opened within 11 o'clock to 15 o'clock time and ventilate, Small plastic shed film is closed; If extraneous minimum temperature 6 ~ 8 DEG C, maximum temperature 15 ~ 17 DEG C, during 8 a.m., canopy temperature is 20 ~ 22 DEG C, or night minimum temperature more than 10 DEG C, when daytime, temperature of shed was more than 20 DEG C, opens booth full front of a Chinese gown film, Small plastic shed film and booth two main entrance daytime 9 at 16 in afternoon and ventilate.The present invention utilize bouquet 5 DEG C even below low temperature under, only otherwise evil of the enduring cold characteristic that still can slowly grow, from bouquet early squaring, by postponing or opening large hut tectorial membrane time in advance, regulate the harvest time of bouquet, make broccoli in annual listing of gathering for 10 days around the Spring Festival, can enrich the market supplies, Cotton Varieties by Small Farming Households benefit can be significantly improved again, there are very wide market prospects.
Booth broccoli high-yield high-efficiency cultivation technology broccoli of the present invention should be selected disease-resistant, Mid-late ripening, the kind that picking time is long, in annual early and middle ten days sowing in August, field planting during seedling age about 30 days, and by the unlatching of large small shed thin film or closedown, the temperature in canopy is regulated to recovery process at the early squaring of broccoli curd, utilize the flower bud development phase to the susceptibility of temperature, can picking time of manual control broccoli, broccoli is enable to obtain higher economic benefit going on the market around the Spring Festival, simultaneously, improve the quality of broccoli, its per mu yield value is made to reach more than ten thousand yuan, achieve standardized nuisanceless greenhouse cultivation.
Embodiment
Material: seed on sale on the initial point selection market of broccoli, as green in sage (middle-late ripening variety), needs about 115 days to gathering after field planting, reach 15 days picking time, bouquet hemispherical, main bouquet type, heavy more than the 0.6kg of single ball, purchased from Ruifan Agricultural Gardening Co., Ltd., Zhenjiang City.
Embodiment one
The present embodiment cultivates broccoli according to following steps:
(1) build simple plastic greenhouse, select physical features high and dry, ventilating cool, draining good soil is loosened and booth is built up in fertile plot, booth north and south seat to, canopy and canopy spacing are 2m, the long 40m of single canopy, wide 6m, booth covers silver gray sunshade net and fly net, and the full canopy of fly net covers.
(2) sow, sowing on August 12 (February 3 was the Spring Festival then), adopt 72 hole dish (PVC material) nursery, built-in vegetables special nutrient soil is coiled in cave, and Nutrition Soil surface is as the criterion apart from panel surface 1cm, and 3 ~ 4, every cave seed broadcasts the central authorities in cavities, one deck Nutrition Soil is evenly spread again after all finishing, water sufficient water, a newspaper in surface cover, in order to moisturizing.
(3) seedling management, sow and emerge after 3 days, remove covering in time, allow rice shoot fully see sunlight, the outer temperature of canopy at noon is higher than lid sunshade net when 30 DEG C, cloudy day removes sunshade net to keep ground moistening in seedling stage, rainy day at booth upper cover film, timely final singling when seedling grows to 2 true leaves, 1 strain seedling is stayed in every cave, opened covering September 6 and carry out hardening, field planting the previous day (September 11) water 1 time permeable.
(4) fertilizer application, field site preparation and fertilization, executed land for growing field crops and executed Chicken dung 5000kg/667 ㎡ August 18, Nitrogen, Phosphorus and Potassium N:P:K(15:15:15) 75kg/667 ㎡, boron fertilizer 1kg/667 ㎡, fertiliser containing magnesium 1kg/667 ㎡, plough in conjunction with rake and execute down, mix with soil.The flat furrow of shallow ridges of wide 1.5m, ditch depth 15cm, furrow width 30cm will be made when playing furrow.
(5) field planting, field planting on September 12, during field planting, earthing is to cotyledon place, and drenches normal root water with water, and every furrow plant 2 row, line-spacing 40cm, spacing in the rows 35cm, cross colonisation, about 3000 strain/667 ㎡.
(6) science control water, broccoli budding before booth not cover film, on moisture management, widen the outer drain ditch system of canopy, and when arid in good time drip irrigation profit soil 3 ~ 4 times.
(7) topdress, within after field planting about 7 days, carry out first time and topdress, execute urea 1.5kg/667 ㎡, potassium chloride 1kg/667 ㎡, the two water-soluble rear pouring is executed, and second time is topdressed and within about 10 days, to be carried out after first time topdresses, and executes Urea Urea 5kg/667 ㎡, potassium chloride 3kg/667 ㎡, carried out topdressing for 1 ~ 2 time according to plant growth condition every about 10 days later again.
(8) integrated control damage by disease and insect, time fine, in booth, temp. and humidity is higher, ventilation should be suitably increased by 1 ~ 2 hour noon, to reduce the temp. and humidity in canopy, utilize 75% tpn wetting powder, 800 times of liquid or 70% mancozeb, 500 times of liquid, spray in every 7 ~ 10 days 1 time, connect spray and prevent and treat damping off, downy mildew and black rot 2 ~ 3 times, utilize 10% imidacloprid wettable powder, 600 times of liquid, 5% flufenoxuron missible oil 700 times liquid or 5% UC 62644 missible oil 800 times alternately prevent and treat diamond-back moth, cabbage caterpillar and aphid.
(9) temp. and humidity is regulated and controled, December 15 buddingged at the beginning of broccoli, 15 ~ January 20 December, according to thermohygrometer data in canopy, range estimation fog size, in conjunction with weather forecast and enter booth and artificially feel, rationally close or open booth full front of a Chinese gown film, Small plastic shed film, north and south door.Be specially:
A. whole day is closed: namely door, booth full front of a Chinese gown film, Small plastic shed film and skirt film are closed for equal 24 hours; Have winter adopt: overcast and rainy cloudy, day temperature 3 ~ 5 DEG C in a period of time of following situation.
B. semi-open: namely to open booth south gate, north gate and full front of a Chinese gown film, close small shed thin film, opening time is open south gate, north gate and full front of a Chinese gown film 5 ~ 7 hours daytime, remaining and night contract fully, have during one of following situation and adopt: one is weather forecast minimum temperature 2 ~ 3 DEG C, maximum temperature more than 10 DEG C, wind-force 4-5 level; Two temperature of shed 18 ~ 20 DEG C when being the morning 11, open north and south door up to 15 time and full front of a Chinese gown film ventilates in 11;
C. full open: namely open booth south gate and north gate and full front of a Chinese gown film and Small plastic shed film, open about when daytime 9, close after when afternoon 16, have during one of following situation and adopt: one is the weather forecast minimum air temperature 6 ~ 8 DEG C, the highest 15 ~ 17 DEG C, now the morning 8 time temperature of shed 20 ~ 22 DEG C, two is that early September is to early November, night, minimum temperature was more than 10 DEG C, and in daytime canopy, temperature is more than 20 DEG C, then full open is ventilated.
(10) gather in the crops, on 20-February 10 January, bouquet edge small bud group is slightly loose, bouquet lower bands scape is about 3cm and cuts off together, and retains 3-4 sheet leaflet, and packaging of gathering successively listing, output reaches 1900kg/667 ㎡.
Embodiment two
The present embodiment cultivates broccoli according to following steps:
(1) build simple plastic greenhouse, select physical features high and dry, ventilating cool, draining good soil is loosened and booth is built up in fertile plot, booth north and south seat to, canopy and canopy spacing are 2m, the long 40m of single canopy, wide 6m, booth covers silver gray sunshade net and fly net, and the full canopy of fly net covers.
(2) sow, sowing on August 3 (January 23 was the Spring Festival then), adopt 72 hole dish (PVC material) nursery, vegetables special nutritional seedlings and soil.
(3) seedling management, sows and emerges after 2 days, remove covering, allow rice shoot fully see light during fine day, and the outer temperature of canopy at noon is higher than lid sunshade net when 30 DEG C.Cloudy day removes sunshade net to keep ground moistening in seedling stage, and the rainy day, final singling when seedling grows to 1 true leaf, 1 strain seedling was stayed in every cave, carries out practicing seedling August 26, and September 1 watered permeable at booth upper cover film.
(4) fertilizer application, August 10, field site preparation and fertilization, executed decomposed dung 3000kg/667 ㎡, Nitrogen, Phosphorus and Potassium N:P:K(15:15:15) 75kg/667 ㎡, boron fertilizer 1kg/667 ㎡, fertiliser containing magnesium 1kg/667 ㎡, plough in conjunction with rake and execute down, mix with soil.Will make the flat furrow of shallow ridges, furrow wide 1.2m when playing furrow, furrow ditch depth is about 15cm, and furrow furrow width is about 30cm.
(5) field planting, September 2 carried out field planting, and during field planting, earthing is to cotyledon place, and drenched normal root water with water, and every furrow plant 2 row, line-spacing 40cm, spacing in the rows 35cm, cross colonisation, about 3000 strain/667 ㎡.
(6) science control water, broccoli budding before booth not cover film, on moisture management, widen the outer drain ditch system of canopy, during arid, should native 3 ~ 4 times of drip irrigation profit in good time.
(7) topdress, within after field planting about 7 days, carry out first time and topdress, execute urea 1.5kg/667 ㎡, potassium chloride 1kg/667 ㎡, the two water-soluble rear pouring is executed, and second time is carried out after first time topdresses for about 10 days, execute Urea Urea 5kg/667 ㎡, potassium chloride 3kg/667 ㎡.Carried out again topdressing for 1 ~ 2 time according to plant growth condition every about 10 days later.
(8) integrated control damage by disease and insect, time fine, in booth, temp. and humidity is higher, suitably increase ventilation 1 ~ 2 hour noon, reduce temp. and humidity in canopy, damping off, downy mildew, black rot etc. are prevented and treated, with insects such as chrysanthemum ester class, bacillus thuringiensis,Bt (Bt) insecticides control diamond-back moth, cabbage caterpillar and aphids with germicide spray such as tpn, carbendazim, metalaxyls.
(9) regulate and control temp. and humidity, December 5 buddingged at the beginning of broccoli, 5 ~ January 10 December, according to thermohygrometer data in canopy, range estimation fog size, in conjunction with weather forecast and enter booth and artificially feel, reasonable closedown or unlatching full front of a Chinese gown film, Small plastic shed film, north and south door.Be specially:
A whole day is closed: namely door, booth full front of a Chinese gown film, Small plastic shed film and skirt film are closed for equal 24 hours; Have winter adopt: overcast and rainy cloudy, day temperature 3 ~ 5 DEG C in a period of time of following situation.
B is semi-open: namely open booth south gate, north gate and full front of a Chinese gown film, close small shed thin film, opening time is open south gate, north gate and skirt film 5 ~ 7 hours daytime, remaining and night contract fully, have during one of following situation and adopt: one is weather forecast minimum temperature 2 ~ 3, maximum temperature more than 10, wind-force 4 ~ 5 grades; Two temperature of shed 18 ~ 20 DEG C when being the morning 11, open north and south door up to 15 time and full front of a Chinese gown film ventilates in 11;
C full open: namely open booth south gate and north gate and full front of a Chinese gown film and Small plastic shed film, open about when daytime 9, close after when afternoon 16, have during one of following situation and adopt: one is the weather forecast minimum air temperature 6 ~ 8 DEG C, the highest by 15 ~ 17, now the morning 8 time temperature of shed 20 ~ 22 DEG C, two is that early September is to early November, night, minimum temperature was more than 10, and in daytime canopy, temperature is more than 20 DEG C, then full open is ventilated.
(10) gather in the crops, packaging of gathering successively 10 ~ February 5 January listing, output reaches 2000kg/667 ㎡.
In addition to the implementation, the present invention can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of application claims.

Claims (7)

1. a cultivation method for booth broccoli high-yield and high-efficiency, is characterized in that, comprises the following steps:
Step one, seedling bed prepare, and select high-land, ventilating cool, and irrigation and drainage are convenient, and booth is built in the plot that the soil is porous, and on booth, cover silver gray sunshade net and 20 order fly nets;
Step 2, point disk seedling growing, adopt broccoli seeds that 72 holes dishes carry out sowing, nursery, and by film cover on the disk cover of cave;
Step 3, seedling management, sow after within 2 ~ 3 days, emerging, and choosing has the solar time to remove covering, allows rice shoot fully see light, when ambient temperature is more than 30 DEG C, booth is covered sunshade net, thinning when seedling grows to 1 ~ 2 true leaf;
Step 4, site preparation and fertilization, level land, and applies base manure, every 667 ㎡ execute decomposed dung 3000kg, Nitrogen, Phosphorus and Potassium 75kg, boron fertilizer 1kg, fertiliser containing magnesium 1kg, then turn over and bury, mix with soil, make the flat furrow of shallow ridges of wide 1.2 ~ 1.5m, ditch depth 10 ~ 15cm, furrow width 25 ~ 30cm, booth external-open is wider than 30cm, deeply be greater than the drain ditch of 40cm, prevent the occluded water in the outer pin ditch of canopy when raining heavyly from penetrating into booth;
Step 5, field planting, carry out field planting the dusk of choosing cloudy day or fine day, by the distance between rows and hills of 40 × 35, seedling moved to land for growing field crops;
Step 6, field management, normal root water is watered in time after field planting, and moisten soil 2 ~ 4 times in broccoli heading stage drip irrigation, to keep ground moistening, field planting is carried out first time and is topdressed after 7 days, every 667 ㎡ execute urea 1.5kg, potassium chloride 1kg, carry out second time after topdressing 10 days for the first time and topdress, every 667 ㎡ execute urea 5kg, potassium chloride 3kg, carried out 1 ~ 2 time according to plant growth condition every 10 days later and topdresses;
Step 7, prevention and elimination of disease and pests, utilize 75% tpn wetting powder, 800 times of liquid or 70% mancozeb, 500 times of liquid, spray in every 7 ~ 10 days 1 time, connect spray and prevent and treat damping off, downy mildew and black rot 2 ~ 3 times, utilize 10% imidacloprid wettable powder, 600 times of liquid, 5% flufenoxuron missible oil 700 times liquid or 5% UC 62644 missible oil 800 times alternately prevent and treat diamond-back moth, cabbage caterpillar and aphid;
Step 8, adjustment temp. and humidity, at broccoli early squaring, according to temp. and humidity data and weather condition in booth, rationally close or open booth skirt film, Small plastic shed film and booth two main entrance;
Step 9, to gather, when the edge small bud of the main bouquet of broccoli is slightly loose, bouquet is cut off at scape 3cm place together with lower bands scape.
2. the cultivation method of booth broccoli high-yield and high-efficiency according to claim 1, is characterized in that: also have between step one and step 2 and select broccoli kind and need listing date to determine the sowing time according to cauliflower.
3. the cultivation method of booth broccoli high-yield and high-efficiency according to claim 1, is characterized in that: in described step 2, has the vegetables special nutrient soil purchased from Shanghai Denmark Pin Shi in 72 holes dishes.
4. the cultivation method of booth broccoli high-yield and high-efficiency according to claim 1, is characterized in that: if in described step 3 the cloudy day, remove sunshade net to keep the moistening of soil, and cover film covering is coiled in cave by Yu Yuqian, prevents rain drop erosion seedbed.
5. the cultivation method of booth broccoli high-yield and high-efficiency according to claim 1, is characterized in that: within before field planting 1 week in described step 5, progressively remove covering with hardening, described field planting selects the seedling age of seedling to be 28 ~ 32 days.
6. the cultivation method of booth broccoli high-yield and high-efficiency according to claim 1, is characterized in that: described fertilizing type is executed urea and the water-soluble rear pouring of potassium chloride, the composite fertilizer of described Nitrogen, Phosphorus and Potassium to be N:P:K be 15:15:15.
7. the cultivation method of booth broccoli high-yield and high-efficiency according to claim 1, is characterized in that: in described step 8, if weather wet weather is cloudy, when day temperature is 3 ~ 5 DEG C, by booth skirt film, Small plastic shed film and booth two main entrance Close All; If extraneous minimum temperature 2 ~ 3 DEG C, maximum temperature more than 10 DEG C, during wind-force 4 ~ 5 grades, booth skirt film and booth two main entrance are opened 5 ~ 7 hours by daytime, and Small plastic shed film is closed; If canopy temperature is 18 ~ 20 DEG C during the same day 11, booth skirt film and booth two main entrance were opened within 11 o'clock to 15 o'clock time and ventilate, Small plastic shed film is closed; If extraneous minimum temperature 6 ~ 8 DEG C, maximum temperature 15 ~ 17 DEG C, during 8 a.m., canopy temperature is 20 ~ 22 DEG C, or night minimum temperature more than 10 DEG C, when daytime, temperature of shed was more than 20 DEG C, opens booth skirt film, Small plastic shed film and booth two main entrance daytime 9 at 16 in afternoon and ventilate.
CN201310130631.0A 2013-04-16 2013-04-16 Method for cultivating broccoli in greenhouse at high yield and high efficiency Expired - Fee Related CN103168606B (en)

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