CN103703997A

CN103703997A - Reproduction method for improving eucalyptus cutting rooting rate and scion strip utilization rate

Info

Publication number: CN103703997A
Application number: CN201310753269.2A
Authority: CN
Inventors: 杨曾奖; 黄烈健; 施琼; 胡峰; 徐大平
Original assignee: Research Institute of Tropical Forestry of Chinese Academy of Forestry
Current assignee: Research Institute of Tropical Forestry of Chinese Academy of Forestry
Priority date: 2013-12-31
Filing date: 2013-12-31
Publication date: 2014-04-09
Anticipated expiration: 2033-12-31
Also published as: CN103703997B

Abstract

The invention discloses a reproduction method for improving the eucalyptus cutting rooting rate and the scion strip utilization rate. The method includes the steps that newly-grown eucalyptus scion strips in the year are obtained in a clipped mode, each scion strip is clipped into cutting strips which are 2-3cm in length, 5-8 cutting strips can be obtained by each scion strip, the cutting strips after ABT processing are inserted into yellow subsoil, cultivation is carried out in a greenhouse, the humidity is about 90%, the temperature is about 30 DEG C, the cutting strips take roots after being cultivated for about 30 days, fertilizer and water management is strengthened after root taking, the cutting strips can grow to be rooting seedlings which are 20-25cm in height after cultivation is carried out for about 2-3 months, and the rooting seedlings can be used for afforestation. According to the eucalyptus cutting method, the cutting strip rooting rate is higher than 97%, and the survival rate is high; 5-8 cutting seedlings can be grown by one scion strip, and the utilization rate of the scion strips is high; when a large number of nursery stocks are produced, a cutting orchard with the small size is required, the production cost is remarkably reduced, the economical benefits are improved, and the reproduction method is easy to operate, implement and popularize, and favorable for large-area popularization and application.

Description

A kind ofly improve eucalyptus cuttage root-taking Shuai Ji the propagation method of Miho bar availability

Technical field

The invention belongs to field of plant growing technology, be specifically related to a kind ofly improve eucalyptus cuttage root-taking Shuai Ji the propagation method of Miho bar availability.

Background technology

Eucalyptus (Eucalyptus spp.) is the general name that Myrtaceae (Myrtaleas juss) eucalyptus belongs to (Eucalyptus L.Heritier) plant.Eucalyptus has the good characteristics such as strong adaptability, fast growing performance is good, operating cycle is short.Eucalyptus is of many uses, as the eucalyptus oil extracting from eucalyptus leaves is widely used as cosmetics or pharmaceutical raw material.Eucalyptus Wood is good furniture and art work, and its wood fibre is again good papermaking raw material, so eucalyptus establishing in large scale worldwide, and this makes eucalyptus become one of three large forest plantation seeds in the world.

Eucalyptus can breed by seed, group training, grafting, press strip, 5 kinds of modes of cuttage.At present, seedling propagation method is only for breeding.Because eucalyptus is cross pollinated species, easily hybridization between kind, in kind, filial generation genetic character separation degree is very large, is difficult to the uniformity of assurance production forest.Due to the high cost of tissue culture propagating, therefore group training is only for good female seedling breeding.Propagation by grafiting is also only for preserving fine germplasm resources.The reproduction coefficient of press strip is low, therefore few employing.

Cuttage is the widest a kind of of application prospect in vegetative propagation, compare with group training, grafting, press strip etc., it has, and operation is simple, reproduction speed is fast, reproduction coefficient is high, low cost and other advantages, but because eucalyptus does not have the former base of root, add that its body contains the material that inhibition is taken root, utilize general branch cutting to breed root of hair difficulty, must could improve its cuttage root-taking rate by HORMONE TREATMENT.In facility, full-automatic spraying moisturizing cottage propagation is optimum method, but because its facility cost is high, open country cuttage humidity is difficult to guarantee, often makes cuttage survival rate low.

At present, about the research of eucalyptus cuttage technique, mainly adopt the spray of 10～15cm or tender shoots as cutting, for the fringe bar gathering from cutting orchard, a common fringe bar can only obtain a cutting, lower to the availability of fringe bar, and rooting rate is conventionally also low.

Set up a kind of simple to operate, rooting rate is high, fringe bar availability is high eucalyptus cuttage breeding method, will applying of eucalyptus be played to important effect.

Summary of the invention

In order to solve above-mentioned existing problems, the invention provides a kind of needs compare Shao Miho bar just can produce the method for a large amount of cuttage seeding, fringe bar availability has improved 5～10 times, rooting rate can reach more than 98%, reduce the required area of cutting orchard, reduce costs, and easy to operation, gained growth of cuttage seedlings is healthy and strong.

The object of the invention is to a kind ofly improve eucalyptus cuttage root-taking Shuai Ji the propagation method of Miho bar availability.

The technical solution used in the present invention is:

Improve eucalyptus cuttage root-taking Shuai Ji a propagation method for Miho bar availability comprises the following steps:

1) in annual April, June or October, the eucalyptus fringe bar of newborn length 20～30 cm then of clip health, cut off part that base portion 2～3cm lignification is higher and top containing the tender part of children of 2～3 axillalry buds, remaining fringe bar is cut into the long cutting containing 1～2 axillalry bud of 2～3 cm, retain 1～2 leaf, and every leaf cuts off 1/2～2/3, every newborn fringe bar can obtain 5～8 cuttings;

2) will after cutting sterilization, clean up, then its base portion is soaked to 1～2 h with the ABT solution of 200～400ppm;

3) by the cutting cuttage of soaking through ABT in the nutrition cup of yellow soil that sterilization is housed (as shown in Figure 1);

4) nutrition cup is positioned at sterile booth cultivation, every a 0.8～1.0gL of spray in 4～5 days ^-1carbendazim solution, cultivate 28～32 angel's rooting of cuttings (if Fig. 2 is the eucalyptus cuttage seeding of taking root);

5) cutting after taking root is carried out to rich water quality management, drench and execute 5～10gL weekly ^-1nitrogen-phosphorus-potassium compound fertilizer 1 time, cultivate the seedling of taking root that cutting after 2～3 months grows up to high 20～25cm, retain a lopwood bar of its growing way the best, cut off other branches, the seedling of taking root now can be used for afforestation, the management after afforestation is with conventional afforestation management.

Further, the eucalyptus fringe bar described in step 1) is the eucalyptus fringe bar of clip 1～2 year raw cutting orchard setting up from eucalyptus choiceness group training seedling.

Further, step 2) described cutting sterilization is with 0.8～1.2gL ^-1carbendazim solution sterilization 5～8min.

Further, the yellow soil of the sterilization described in step 3) is cuttage the previous day with 0.8～1.0gL ^-1carbendazim solution to sterile yellow soil.

Further, the sterile booth described in step 4) refers to before cuttage 6～8 days with 2～5gL ^-1the sterile booth of liquor potassic permanganate.

Further, the condition of the cultivation described in step 4) be controlled humidity 88～92%, temperature is at 28～32 ℃.

The invention has the beneficial effects as follows:

The made rooting of cuttings rate of eucalyptus cottage method of the present invention reaches more than 98%, and survival rate is high, and growth of cuttage seedlings is healthy and strong, grows fast, and cost is low, and operation is simple, is easy to promote, and is conducive to large scale application.

The present invention can make a fringe bar produce 5～8 cuttage seeding, and traditional cottage method can only be produced at most 1 cuttage seeding, significantly improved the availability of fringe bar, only need be compared with the cutting orchard of small size while producing nursery stock in a large number, significantly reduce production cost, improved economic benefit.

Accompanying drawing explanation

Fig. 1 is the Eucalyptus Cuttings Treated of cuttage in yellow soil;

Fig. 2 is that the eucalyptus cuttage seeding of taking root is cultivated in cuttage.

Embodiment

embodiment 1

1) in annual April, June or October, 1～2 year raw cutting orchard setting up from eucalyptus choiceness group training seedling, clip health is without the newborn fringe bar then of damage by disease and insect, long 20～30cm, cut off the part that base portion lignification is higher (approximately 2～3cm) and top children's tender part (approximately 2～3 axillalry buds), remaining fringe bar is cut into the cutting of 2～3cm long (containing 1～2 axillalry bud), retain 1～2 leaf, every leaf cuts off 1/2～2/3, and every newborn fringe bar according to said method can obtain 5～8 cuttings conventionally;

2) 0.8～1.0gL for cutting ^-1carbendazim solution sterilization 5～8min, clean up, then the ABT processing 1～2h with 200～400ppm by cutting base portion;

3) 2～5gL is first used in cuttage the last week ^-1liquor potassic permanganate cuttage booth is carried out disinfection, 0.8～1.0gL is used in cuttage the previous day again ^-1carbendazim solution to installing in advance the cutting medium yellow soil of nutrition cup (diameter is about 8cm), carry out disinfection, by 2) in the cutting cuttage processed through ABT in yellow soil, make cutting firmly;

4) cutting is positioned at booth cultivation, notes moisture and temperature treatment, and controlled humidity is in 90% left and right, and temperature is 30 ℃ of left and right, every a 0.8～1.0gL of spray in 4～5 days ^-1carbendazim solution, cultivate and can take root for about 30 days;

5) cutting after taking root should be strengthened rich water quality management, promotes seedling growth, drenches and executes 5～10gL weekly ^-1composite fertilizer's (mass percent of nitrogen phosphorus potassium is more than 45%) 1 time, cultivate the seedling of taking root that can grow up to high 20cm left and right after 2～3 months, retain a lopwood bar of growing way the best, cut off other branches, the seedling of taking root now can be used for afforestation, and the management after afforestation is with conventional afforestation management.

The cutting of cultivating in embodiment 12 months is carried out to rooting rate with the statistics of Miho bar availability, and the rooting rate obtaining with traditional cottage method He Miho bar availability contrast, as shown in table 1, wherein traditional cottage method is shown in " Technology in Cutting Breeding Seedling of Eucalyptus; research Agriculture in Jiangxi journal; 2011,23 (8): 59～60 ".

The eucalyptus survival rate that table 1 the inventive method and traditional cuttage obtain is with the contrast between Miho bar availability

Figure 2013107532692100002DEST_PATH_IMAGE002

Note: fringe bar availability refers to the cutting number that average every fringe bar obtains.

The data of adding up from table 1, can know, this inventive method Miho bar availability is 5 times of left and right of traditional cottage method, and survival rate is also obviously better than traditional cottage method.

Claims

1. a propagation method that improves eucalyptus cuttage root-taking rate and Miho bar availability, is characterized in that: comprise the following steps:

3) by the cutting cuttage of soaking through ABT in the nutrition cup of yellow soil that sterilization is housed;

4) nutrition cup is positioned at sterile booth cultivation, every a 0.8～1.0gL of spray in 4～5 days ^-1carbendazim solution, cultivate 28～32 angel's rooting of cuttings;

2. according to claim 1ly a kind ofly improve eucalyptus cuttage root-taking Shuai Ji the propagation method of Miho bar availability is characterized in that: the eucalyptus fringe bar described in step 1) is the eucalyptus fringe bar of clip 1～2 year raw cutting orchard setting up from eucalyptus choiceness group training seedling.

3. according to claim 1ly a kind ofly improving eucalyptus cuttage root-taking Shuai Ji the propagation method of Miho bar availability is characterized in that: step 2) described cutting sterilization is for 0.8～1.2gL ^-1carbendazim solution sterilization 5～8min.

4. according to claim 1ly a kind ofly improve eucalyptus cuttage root-taking Shuai Ji the propagation method of Miho bar availability is characterized in that: the yellow soil of the sterilization described in step 3) is cuttage the previous day with 0.8～1.0gL ^-1carbendazim solution to sterile yellow soil.

5. according to claim 1ly a kind ofly improve eucalyptus cuttage root-taking Shuai Ji the propagation method of Miho bar availability is characterized in that: the sterile booth described in step 4) refers to before cuttage 6～8 days with 2～5gL ^-1the sterile booth of liquor potassic permanganate.

6. according to claim 1ly a kind ofly improve eucalyptus cuttage root-taking Shuai Ji the propagation method of Miho bar availability is characterized in that: the condition of the cultivation described in step 4) be controlled humidity 88～92%, temperature is at 28～32 ℃.