CN101379938A

CN101379938A - Method for promoting winter jujube ripen in advance using forcing culture

Info

Publication number: CN101379938A
Application number: CNA2008101403324A
Authority: CN
Inventors: 柳桂林
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-09-30
Filing date: 2008-09-30
Publication date: 2009-03-11

Abstract

The invention provides a method for promoting winter jujube to ripen in advance by secondary forcing culture, and belongs to a cultivation method of fruit trees. The method comprises the following steps: a spring warm-type greenhouse is constructed for the winter jujube trees in the first ten days of March and then is dismantled at the last ten days of May; a walk-in tunnel is constructed for the winter jujube trees and secondary branch ring girdling is carried out in the last ten days of July; lilijia (a seaweed fertilizer), KEMH, potassium sulfate and sugar-deepening agent are sprinkled on foliages once every 5 days from the last ten days of July to the second ten days of August; a cooling device is used for gradually cooling the temperature at night; when the light is not sufficient in the daytime of cloudy days and rainy days, a bulb is lighted to enhance the strength of illumination, and the temperature is increased by a warming-up device. The method for promoting the winter jujube to ripen in advance can cause the winter jujube to ripen 40-50 days in advance; thereby, the time that the winter jujube duly ripens and is on sale is avoided, the harvesting period and the sale period thereof are prolonged, the sale price and economic benefit thereof are improved. In addition, the winter jujube has good quality, high sugar content and good color.

Description

The method of promoting winter jujube ripen in advance using forcing culture

Technical field

The invention provides the cultivation method of a planting fruit-trees, especially a kind of winter jujube tree cultivation method.

Background technology

The winter jujube is the rare kind of eating raw of in China's zizyphus, tasty mouthfeel, and vitamin content is very high.Because the natural freshness date and the storage ﹠ fresh-keeping period of winter jujube are all very short, therefore along with the rapid expansion of winter jujube planting scale, yield of winter jujubes also increases sharply, the winter jujube is concentrated ripe, concentrated listing in a large number, the sales volume and the selling price of winter jujube are very limited, the development of winter jujube and winter jujube plant husbandry is caused adverse effect.Application number is that 03111956.5 Chinese patent discloses a kind of method that promotes winter jujube ripen in advance, and it is to select dwarfing, precocious winter jujube cultivars for use; Since the early and middle ten days in December, the winter jujube tree is entered in the winter warm type big shack, the button canopy heats, and temperature of shed is not less than 8 ℃ before being controlled at bud, is not higher than 28 ℃, and the florescence is not less than 13 ℃, is not higher than 30 ℃; May, early and middle ten days removed booth; Extract newborn jujube head at once after the winter jujube tree germination; Pinching when fruit branch grows to 9 leaves promotes early blossoming to bear fruit; Topdress based on phosphorus potash fertilizer.Though this method can promote winter jujube ripen in advance, the time that shifts to an earlier date is shorter, and the quality of winter jujube is also undesirable.

Summary of the invention

Technical problem to be solved by this invention is, a kind of method of promoting winter jujube ripen in advance using forcing culture is provided, and with further promotion winter jujube ripen in advance, and improves the quality of winter jujube.

The present invention is achieved in that the method for promoting winter jujube ripen in advance using forcing culture, and described method is, from early March, the winter jujube tree is entered in the spring warm type big shack, and late May removes booth; Since late July make the winter jujube tree enter in the shed, dig out the ditch of wide 0.2-0.4m, dark a 0.3-0.5m in middle shed periphery, to cut off in the canopy underground heat conduction with the external world; Late July is completely cured at the ditch that digs dark 0.3-0.4m of a week from trunk 1.3-1.5m place, nourishes and grows with inhibition; Carry out secondary branch girdling to jujube tree the last ten-days period in July, nourishes and grows to suppress the secondary branch, and new jujube head pinching is removed new jujube and hung; From late July to mid-August, every 5 days, foliage-spray once dilute 2000 times Li Lijia, the dilution 1000 times Haishengsu-active substance extracted from marine living things, the dilution 500 times potassium sulphate and dilute 2000 times sugar-increasing agent; At the ethrel that concentration of foliage-spray mid-August is 15-25ppm, the ethrel that to spray concentration after 5 days be 35-45ppm; Afternoon, 5:30-6:00 built canopy, and elder generation's lid layer Polypropylence Sheet adds one deck thermal insulation quilt again during the lid canopy, and the next morning, 7:30-8:00 removed canopy, adopted night cooling system progressively to lower the temperature, morning 2:00 reduce to minimum, to strengthen day and night temperature; Cloudy, when the rainy day daylight is not enough, light bulb to improve intensity of illumination, utilize warming-up device to heat to temperature of shed and be 29-31 ℃, to strengthen the photosynthesis of winter jujube, be beneficial to nutrient accumulation.

The cultivation method of this promotion winter jujube ripen in advance, can make winter jujube ripen in advance more than 40-50 days, be present winter jujube maturation method the earliest, avoided the winter jujube and concentrated the time ripe, listing, prolong the harvest time and the selling period of winter jujube, improved the economic benefit of selling price and winter jujube plantation.And the quality better of winter jujube, the sugar content height is painted good.

Embodiment

Further specify the present invention below.

Described cooling system is an air-conditioner, and warming-up device can be air-conditioner or coal stove.

Described since late July make the winter jujube tree enter in the shed, be meant in winter jujube tree outside and set up middle shed.

Described sugar-increasing agent can with have multiple, the biological sugar-increasing agent of producing as U.S. fructose, Beijing China Kang Yuan Science and Technology Ltd. etc.

The Li Lijia that described dilution is 2000 times is meant that the water of 1 jin of Li Lijia and 2000 jin mixes.The dilution of Haishengsu-active substance extracted from marine living things, potassium sulphate and sugar-increasing agent principle therewith is identical.

" adopt night cooling system progressively to lower the temperature, morning 2:00 reduce to minimum, to strengthen day and night temperature " process in, minimum temperature can be reduced to 16 ℃.By strengthening day and night temperature, can reach the purpose that increases winter jujube pol accumulation.When lighting bulb, can adopt incandescent lamp bulb with the raising intensity of illumination.

Claims

1, the method for promoting winter jujube ripen in advance using forcing culture is characterized in that, described method is, from early March, the winter jujube tree is entered in the spring warm type big shack, and late May removes booth; Since late July make the winter jujube tree enter in the shed, dig out the ditch of wide 0.2-0.4m, dark a 0.3-0.5m in middle shed periphery, to cut off in the canopy underground heat conduction with the external world; Late July is completely cured at the ditch that digs dark 0.3-0.4m of a week from trunk 1.3-1.5m place, nourishes and grows with inhibition; Carry out secondary branch girdling to jujube tree the last ten-days period in July, nourishes and grows to suppress the secondary branch, and new jujube head pinching is removed new jujube and hung; From late July to mid-August, every 5 days, foliage-spray once dilute 2000 times Li Lijia, the dilution 1000 times Haishengsu-active substance extracted from marine living things, the dilution 500 times potassium sulphate and dilute 2000 times sugar-increasing agent; At the ethrel that concentration of foliage-spray mid-August is 15-25ppm, the ethrel that to spray concentration after 5 days be 35-45ppm; Afternoon, 5:30-6:00 built canopy, and elder generation's lid layer Polypropylence Sheet adds one deck thermal insulation quilt again during the lid canopy, and the next morning, 7:30-8:00 removed canopy, adopted night cooling system progressively to lower the temperature, morning 2:00 reduce to minimum, to strengthen day and night temperature; Cloudy, when the rainy day daylight is not enough, light bulb to improve intensity of illumination, utilize warming-up device to heat to temperature of shed and be 29-31 ℃, to strengthen the photosynthesis of winter jujube, be beneficial to nutrient accumulation.