CN102577820B - Cuttage raising method for Cercis chinensis - Google Patents

Abstract

The invention provides a method for propagating Bauhinia Bauhinia, including the steps of site preparation, bed making, cutting treatment, seedling management, etc., aiming at the characteristics of large-scale breeding of seedlings in large nurseries, and selecting reasonable seedbed specifications and cuttings for the cutting propagation of Bauhinia Specifications, cutting preservation methods and cutting management methods. After adopting the method of the invention, the survival rate of the Bauhinia cuttings is as high as 98%, and it can bloom in April of the second year, and the flower color is gorgeous. To meet the requirements of rapid success.

Description

A kind of cutting seedling raising method of Bauhinia

technical field

    The invention relates to a method for raising seedlings of garden plants, in particular to a method for raising seedlings by cuttings of Bauhinia.

Background technique

Bauhinia ( Cercischinensis ), a plant of the genus Bauhinia in the Hemataceae family. Arbor with obvious trunk, up to 8-10 meters high, DBH 50cm, mostly shrub-like in cultivation. Distributed in Hubei, Liaoning, Hebei, Shaanxi, Gansu, Guangdong, Yunnan, Sichuan and other provinces, it likes light and has a certain degree of cold resistance. In Beijing, it needs to be planted in a leeward and sunny place. It likes fertile and well-drained soil. It is not resistant to flooding and sprouts. Strong and resistant to pruning.

Bauhinia leaves are nearly round, 6-14cm long, with acute tip, heart-shaped leaf base, entire margin, glabrous on both sides, 4-10 purple flowers clustered on old branches, pods 5-14cm long, along the ventral line There are narrow wings, the flowering period is April, the leaves are open, and the fruit matures in October. Strong germination, multi-branched, resistant to pruning, open tree shape, drooping branches, obovate petals, rose red or purple rose red, long flowering period, suitable for cluster planting in courtyards, in front of buildings and on the edge of lawns, because the leaves have not yet issued when flowering , so it should be planted with evergreen pines and cypresses as the foreground or planted in front of light-colored objects, such as white powder walls or beside rocks.

Bauhinia is usually not fruity, and it mainly uses cuttings, budding and other methods for asexual reproduction. Therefore, it is an urgent problem in this field to provide a cutting method with perfect technology and high survival rate.

Contents of the invention

The invention provides a method for Bauhinia cuttings suitable for mass propagation in nurseries, which can provide better environmental conditions for Bauhinia cuttings propagation and improve the survival rate of cuttings through the steps of soil preparation, bed making, cutting treatment, seedling management and the like.

The present invention consists of the following steps:

(1) Soil preparation: choose sandy loam or loamy soil with loose texture and good drainage in the nursery, and plow 20-30cm deep in the autumn of the year before the cuttings, so as to effectively eliminate underground pests and germs, and at the same time enhance the ability of water storage and moisture conservation; harrow the ground in the spring of the following year , with a depth of 20cm, combined with harrowing, apply 100,000kg of decomposed farmyard manure, 200kg of diammonium phosphate, and 300kg of potassium sulfate per hectare. At the same time, carry out soil disinfection, and use 800 times carbendazim to spray the soil comprehensively.

(2) Make a bed: the width of the bed surface is 105 cm, the height of the bed is 15 cm, the length depends on the terrain, the distance between the beds is 35 cm, the bed surface is flat, water the bed surface thoroughly, level it with a flat rake, cover it with plastic film to increase the low temperature, and cut it after 5 days;

(3) Cutting cutting and processing: After the Bauhinia stop growing and the leaves fall off in autumn one year before the cutting, cut the branches that were born in the current year, fully developed, and free from diseases and insect pests from the Bauhinia mother tree. The length of the cuttings is 12-15cm, and the upper incision is cut into Flat mouth, 2cm from the top, cut the lower cut obliquely into a horseshoe shape, 1cm from the bottom buds, align the lower parts of every 20 cuttings, and tie them up; soak them in clean water for 2 hours and put them in a sand pit for winter. The sand pit should be built in the leeward Sunny, high-lying places, avoid stagnant water. The pit is 2m deep and wide, and the length is determined according to the needs. Lay 30cm thick red bricks on the bottom of the pit, and 30cm thick wet river sand on top; place bundled cuttings in the middle, spread 10cm sand between each layer of cuttings, cover the surface of the pit with straw curtains, and compact the surroundings;

(4) Take out the cuttings in April, soak them in running water for 24 hours, then immerse the lower cuttings in a container containing a mixture of 250kg/kg indole acetic acid and 800 times carbendazim, soak for 10 minutes, take them out, and uncover the bed surface Put the cuttings on the plastic film, insert the cuttings straight or obliquely on the prepared seedbed, the insertion depth is 1/2-1/3 of the branches, the row spacing is 20*20cm, water thoroughly after insertion, and pay attention to moisturizing;

(5) In the early stage (within 20 days after cutting), the temperature of the seedbed is controlled at 20-25°C, and the temperature and humidity requirements are not strict in the later stage; after cutting, the bed surface and pages are disinfected with chlorothalonil every 2 days, and foliage topdressing is carried out every 10 days. Spray on the liquid surface of a mixed solution of 2g/kg potassium dihydrogen phosphate and 1g/kg urea when topdressing; timely weeding and loosening of the soil, avoid loosening and damage to the cutting seedlings during the process of loosening the soil and weeding, and stop all management measures to promote the growth of seedlings after mid-July , Humidity increases the amount of phosphorus and potassium fertilizers and promotes lignification of seedlings.

Beneficial effect:

Aiming at the characteristics of large-scale propagation of seedlings in large nurseries, the invention rationally selects seedbed specifications, cutting specifications, cutting preservation methods and cutting management methods for the cutting propagation of Bauhinia. After adopting the method of the invention, the survival rate of the Bauhinia cuttings is as high as 98%, and it can bloom in April of the second year, and the flower color is gorgeous. To meet the requirements of rapid success.

Detailed ways

Example 1:

The present invention relies on following steps to implement:

(1) Soil preparation: choose loose and well-drained sandy loam or loam soil for the nursery, and plow 20-30cm deep in the autumn of the year before the cuttings to effectively eliminate underground pests and germs, and at the same time enhance the ability to store water and moisture; rake the ground in the spring of the following year , with a depth of 20cm, combined with harrowing, apply 100,000kg of decomposed farmyard manure, 200kg of diammonium phosphate, and 300kg of potassium sulfate per hectare. At the same time, carry out soil disinfection, and use 800 times carbendazim to spray the soil comprehensively.

(2) Make a bed: the width of the bed surface is 105 cm, the height of the bed is 15 cm, the length depends on the terrain, the distance between the beds is 35 cm, the bed surface is flat, water the bed surface thoroughly, level it with a flat rake, cover it with plastic film to increase the low temperature, and cut it after 5 days;

(3) Cutting cutting and processing: After the Bauhinia stop growing and the leaves fall off in autumn one year before the cutting, cut the branches that were born in the current year, fully developed, and free from diseases and insect pests from the Bauhinia mother tree. The length of the cuttings is 12-15cm, and the upper incision is cut into Flat mouth, 2cm from the top, cut the lower cut obliquely into a horseshoe shape, 1cm from the bottom buds, align the lower parts of every 20 cuttings, and tie them up; soak them in clean water for 2 hours and put them in a sand pit for winter. The sand pit should be built in the leeward Sunny, high-lying places, avoid stagnant water. The pit is 2m deep and wide, and the length is determined according to the needs. Lay 30cm thick red bricks on the bottom of the pit, and 30cm thick wet river sand on top; place bundled cuttings in the middle, spread 10cm sand between each layer of cuttings, cover the surface of the pit with straw curtains, and compact the surroundings;

(4) Take out the cuttings in April, soak them in running water for 24 hours, then immerse the lower cuttings in a container containing a mixture of 250kg/kg indole acetic acid and 800 times carbendazim, soak for 10 minutes, take them out, and uncover the bed surface Put the cuttings on the plastic film, insert the cuttings straight or obliquely on the prepared seedbed, the insertion depth is 1/2-1/3 of the branches, the row spacing is 20*20cm, water thoroughly after insertion, and pay attention to moisturizing;

(5) In the early stage (within 20 days after cutting), the temperature of the seedbed is controlled at 20-25°C, and the temperature and humidity requirements are not strict in the later stage; after cutting, the bed surface and pages are disinfected with chlorothalonil every 2 days, and foliage topdressing is carried out every 10 days. Spray on the liquid surface of a mixed solution of 2g/kg potassium dihydrogen phosphate and 1g/kg urea when topdressing; timely weeding and loosening of the soil, avoid loosening and damage to the cutting seedlings during the process of loosening the soil and weeding, and stop all management measures to promote the growth of seedlings after mid-July , Humidity increases the amount of phosphorus and potassium fertilizers and promotes lignification of seedlings.

Pay attention to overwintering and cold protection after the leaves fall in autumn, and it can be used in the next year.

Claims (1)

1. the cuttage and seedling culture method of a cercis is characterized in that, comprises the steps:

(1) wholely: nursery lot selects that quality is loose, well-drained sandy loam or loam, and plough deeply 20-30cm the autumn of cuttage the previous year, effectively eliminates soil insect and germ, strengthens the ability of retaining and conserveing soil moisture simultaneously; Rake the soil level spring in next year, and degree of depth 20cm applies well-rotted farmyard manure 100 in conjunction with the per hectare of raking the soil level, 000kg, and diammonium phosphate 200kg, potassium sulphate 300kg carries out soil disinfection simultaneously, adopts 800 times of carbendazim that soil is sprayed comprehensively;

(2) make bed: the wide 105cm of bed surface, height of bed 15cm, length is decided according to physical features, bed spacing 35cm, bed surface is smooth, bed surface is watered permeable, hug with flat rake flat, covering with plastic film raising low temperature, cuttage behind the 5d;

(3) plugged ear clip and processing: behind cuttage cercis in autumn the previous year stops growing, leaf the falls light, from the cercis elite stand clip give birth to then, grow enrich, the branch of no damage by disease and insect, cutting length 12-15cm, upper cut is cut into flat mouthful, apart from roof pressure 2cm, following clip is cut sth. askew into the shape of a hoof, apart from end bud 1cm, the alignment of per 20 stem cutting fringe bottoms is tied; Soak with clear water and to put into Sha Zangkeng behind the 2h of back and survive the winter, husky Zang Keng to build in leeward on the sunny side, the higher place of physical features, avoid ponding; Cheat dark, wide 2m, length is decided as required; The thick common brick of the end, hole shop 30cm, the wet river sand that upper berth 30cm is thick; The centre swings in the plugged ear of tying up, shop 10cm sand between every layer of plugged ear, and the surface, hole covers compacting all around with straw screen or mat;

(4) go up the taking-up plugged ear April, after in flowing water, soaking 24h, the lower cut immersion is held in the container of 250mg/kg heteroauxin and 800 times of carbendazim mixed liquors, soak 10min, take out, open the mulch film on the bed surface, on ready-made seedbed, insertion depth is the 1/2-1/3 of branch with plugged ear straight cutting or oblique cutting, and seeding row spacing is 20*20cm, water permeablely after inserting, note preserving moisture;

(5) seedling bed temperature control in early stage is at 20-25 ℃, and the latter temperature humidity requirement is not tight; Every 2d carries out bed surface and blade face sterilization with tpn after the cuttage, and carries out foliage spray in per 10 days, adopts 2g/kg potassium dihydrogen phosphate and the foliage spray of 1g/kg urea mixed solution when topdressing; Weeding in time, loosen the soil, the process of weeding with a hoe is avoided loosening and the injury cuttage seeding, stops the control measures that all promote seedling growths after mid-July, and appropriateness increases phosphorus potash fertilizer consumption, promotes the nursery stock lignification.