CN101473753A - Method for continuous growth of perennial water culture sweet potato with grafting and root-changing method - Google Patents
Method for continuous growth of perennial water culture sweet potato with grafting and root-changing method Download PDFInfo
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- CN101473753A CN101473753A CNA2009100767703A CN200910076770A CN101473753A CN 101473753 A CN101473753 A CN 101473753A CN A2009100767703 A CNA2009100767703 A CN A2009100767703A CN 200910076770 A CN200910076770 A CN 200910076770A CN 101473753 A CN101473753 A CN 101473753A
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Abstract
The invention discloses a method for causing perennial hydroponically grown sweet potatoes to keep growing by grafting and changing roots. The method comprises the following steps: grafting a sweet potato rootstock with new nutrition absorbing roots into an upper stem vine of the roots of a tree plant by reverse grafting when a root system of a perennial hydroponically grown sweet potato tree plant is aging and damaged, putting a new grafted root in nutrient solution as a new organ of the perennial sweet potato tree for absorbing mineral nutrition and water, and gradually replacing an old root system of the original sweet potato tree, thus achieving the root changing purpose, and promoting the sustainable and healthy growth of the sweet potato tree plant.
Description
Technical field
The invention belongs to the crop cultivating technology field, particularly a kind of graft technology of perennial water culture sweet potato.
Background technology
Grafting is one of artificial alimentation propagation method of plant.Promptly the branch or the bud of a plant species, grafting makes two parts that are connected together grow up to a complete plant on the stem or root of another kind of plant.The branch or the bud that connect are called scion, and the plant corpus that is connect is called stock or platform wood.The seedling of 2～4 buds of tool is generally selected in scion for use, becomes the top or the top of plant corpus after the grafting; Become the root system part of plant corpus behind the stock grafting.Grafting is that the function that has callus after utilizing plant injured is carried out.During grafting, make two cambium of hindering face near and tighten together, the result is because of hyperplasia, healing becomes the integral body that vascular tissue links together each other.
Grafting can keep the merit of scion variety, can utilize the advantageous feature of stock again, reaches precocity fruiting, strengthens cold resistance, the ability of drought resistance, disease and insect resistance, can also the economic utilization propagating materials, increase nursery stock quantity.Be usually used in the breeding of fruit tree, forest, flowers; Also being used for gourd vegetables grows seedlings.
When the perennial tree type cultivation of sweet potato, the plant bulk-growth time is longer, generally all more than 1 year, adopt technology such as water-cultivating in addition, when its plant grows to certain phase (general about about 1 year), root system part is rotted by infringement of disease worm or anoxic easily, so the vigor that loses one's life at first can not be kept the demand of plant body mineral nutrition and moisture.In the sweet potato growth later stage,, devitalization impaired along with the root system aging, the plant body also is forced to uproot plants after their edible portions have been harvested discard.
Summary of the invention
The object of the present invention is to provide a kind of method that makes perennial water culture sweet potato continue growth, prolong the healthy and strong phase of tree type cultivation sweet potato, economize on resources, increase yield of sweet potato.
Technical scheme of the present invention is:
A kind of method that makes perennial water culture sweet potato continue growth, when the root system aging of perennial water culture sweet potato tree body plant is impaired, by reverse grafting, the sweet potato stock grafting that will have a newborn nutrient absorption root to the root top stem of this tree body plant climing on, for tree body plant provides newborn root system, replace its old root system gradually, guarantee that the stalwartness of plant body continues growth.
The preparation method of above-mentioned sweet potato stock is that cuttage sweet potato stem section is cultivated in nutrient solution, forms a new sweet potato plantlet, when having treated the healthy and strong root system of a large amount of new lives, remove root system top cauline leaf, keep root system and part stem section as stock, the stem section that is kept is generally long 20-40 centimetre.
Will the new root system of grafting when perennial water culture sweet potato tree body plant self root system does not also break down fully, grafting part is that the tree-shaped plant root of sweet potato top stem is climing, grafting can be to be abutted against or to peg graft, and a plurality of stocks of grafting simultaneously are beneficial to newborn root system group's quick formation on the tree-shaped plant of sweet potato.The new root of institute's grafting places nutrient solution, still leave tree during grafting self root system of body plant heals fully until grafting place, and the newborn root system in the grafting enough provides the nutrition of plant body, when moisture is supplied with, just get rid of the old root system of original sweet potato tree body gradually, reach the purpose of changing root.
During grafting, the cambium on the new and old sweet potato stem is partly sturdy, and twines grafting place 1 time-of-week with plastic film, and its effect is the water evaporates that reduces notch portion, and is beneficial to the healing of graft.To the band rhizome section of setting on the body plant trunk, can adopt inarching method for grafting; Grafting is to the band rhizome section of setting on the body plant lateral bine, and the inarching method and the method for plant propagation with cutting all can be used.
General grafting is that scion is grafted on the stock, scion is lived again and is yielded positive results, the emphasis scion is worth, and sweet potato grafting and root-changing technology of the present invention is outstanding stock value, provide newborn root system by the stock root of hair, make perennial sweet potato tree body plant obtain new root system, guarantee that the stalwartness of plant body continues growth.
The present invention also has following meaning to plant except that the advantage with conventional graft technology.
(1) root regeneration promotes vegetables tree body life time, makes the healthy and strong phase of vegetables tree become 3-5 by original 1-2, even longer.
(2) saving is grown seedlings and the preliminary stage of nourishing and growing, and promotes that crop produces continuously.
Description of drawings
Fig. 1 is the schematic diagram to the new root system of perennial water culture sweet potato tree body plant grafting.
Embodiment
Below in conjunction with accompanying drawing, further describe the present invention by embodiment, should be understood that following examples only are illustrative, the present invention is not limited.
In the sweet potato tree type cultivation, the new sweet potato stem section of cuttage induces root system to grow in nutrient solution in addition.After January, sweet potato stem section is sent new root system, forms a new sweet potato plantlet approximately.Utilize the such band root plantlet of many strains to do stock grafting on the stem of perennial large-scale sweet potato tree body plant.As shown in Figure 1, be abutted against in stock on the trunk 2 and the stock 3 that is plugged on the lateral bine and form the New Development root systems, as the neologism of perennial sweet potato tree bulk absorption mineral nutrition, moisture, simultaneously, former sweet potato tree root is 1 not remove, the two growth in nutrition liquid pool 4 simultaneously, heal fully until grafting place, and during the enough healthy and strong growth of new root system, remove the damage root system that sweet potato is set again fully, realize the replacing that the sweet potato root pastern divides, promote the lasting healthy growth of sweet potato tree body plant.
Present embodiment carries out grafting and root-changing to the sweet potato plant in 2 years of water-cultivating, be positioned at No. 11 test greenhouses, Chinese Academy of Agricultural Sciences Important Project building, this sweet potato variety be Xu potato 18, because of the cultivation time longer, the part root system begins blackout and rots, and has influenced the stalwartness growth of sweet potato plant.
Be to realize the renewal of sweet potato plant root, select the sweet potato stem sections such as Xu's potato 18, Xu's potato 22 of 5 length 25-30cm for use, bottom, place to go 2 joint blades keep top 2-3 joint blade.Sweet potato stem segment cuttage is carried out water-cultivating in nutrient solution, entry 1-2 joint induces sweet potato stem pars infrasegmentalis to grow adventive root.
Sweet potato stem section water-cultivating is about 1 month the time, and its underpart New Development root system has grown to more than 25 centimetres, removes the part branches and leaves of the stem section first half, keeps the stem section on about 30 centimetres on root system part and root top.The stem end of these band rhizome sections is pegged graft or be abutted against on growth the sweet potato plant bottom stem and lateral bine in 2 years, root system places the nutrition liquid bath.During grafting, the cambium on the new and old sweet potato stem is partly sturdy, and twines grafting place 1 time-of-week to promote the healing of grafting wound with plastic film.After the small sweet potatoes plant of new grafting and former sweet potato plant formed an integral body, the root system in the new grafting can be big sweet potato plant provided moisture content and nutrition, strengthens the absorbing capacity of sweet potato plant root.
During grafting just, keep the old root system of former sweet potato, new and old two parts root system is plant body supply moisture and nutriment simultaneously.After treating grafting January, the root system in the new grafting is huge gradually, and it is vigorous grow, can substitute old root system fully, and excise the old root system of sweet potato plant this moment again with scissors, relies on new root system to provide moisture and mineral nutrition supply for plant fully.Rely on this root system grafting and root-changing technology, realized the renewal of perennial water culture sweet potato root system, the tree body life time of grafting and root-changing does not more change the plant life-span of root and improves more than the twice, and this method provides technical guarantee for the rejuvenation growth of perennial sweet potato plant.
Claims (6)
1. one kind makes perennial water culture sweet potato continue the method for growing, when the root system aging of perennial water culture sweet potato tree body plant is impaired, by reverse grafting, the sweet potato stock grafting that will have a newborn nutrient absorption root to the root top stem of this tree body plant climing on, for tree body plant provides newborn root system, replace its old root system gradually.
2. the method for claim 1 is characterized in that: the preparation method of described sweet potato stock is, cuttage sweet potato stem section is cultivated in nutrient solution, generate newborn healthy and strong root system after, remove the root system upper blade, keep root system and part stem section as stock.
3. method as claimed in claim 2 is characterized in that: 20-40 centimetre of the stem segment length who is kept in the described sweet potato stock.
4. the method for claim 1 is characterized in that: a plurality of sweet potato stocks of grafting simultaneously are on the tree-shaped plant of sweet potato.
5. method as claimed in claim 4 is characterized in that: the sweet potato stock grafting is adopted inarching method to tree body plant trunk, grafting is adopted the inarching method or the method for plant propagation with cutting to tree body plant lateral bine.
6. the method for claim 1 is characterized in that: the old root system of the body plant that still leaves tree during grafting heal fully until grafting place, and the newborn root system in the grafting enough provides the nutrition of plant body, when moisture is supplied with, just gets rid of old root system gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100767703A CN101473753A (en) | 2009-01-20 | 2009-01-20 | Method for continuous growth of perennial water culture sweet potato with grafting and root-changing method |
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| CNA2009100767703A CN101473753A (en) | 2009-01-20 | 2009-01-20 | Method for continuous growth of perennial water culture sweet potato with grafting and root-changing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103703940A (en) * | 2013-12-17 | 2014-04-09 | 中国农业科学院农业环境与可持续发展研究所 | Alternate-plant cyclic harvest method of conjoined sweet potatoes |
| CN105532267A (en) * | 2015-12-07 | 2016-05-04 | 崔学晨 | Ornamental tree-shape tomato self-strain stem-vine pup joint anti-premature senility method |
| CN111201934A (en) * | 2018-11-22 | 2020-05-29 | 赵志明 | Intermediate stock rooting cultivation method for avocados |
-
2009
- 2009-01-20 CN CNA2009100767703A patent/CN101473753A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103703940A (en) * | 2013-12-17 | 2014-04-09 | 中国农业科学院农业环境与可持续发展研究所 | Alternate-plant cyclic harvest method of conjoined sweet potatoes |
| CN103703940B (en) * | 2013-12-17 | 2015-11-18 | 中国农业科学院农业环境与可持续发展研究所 | A kind of disjunctor sweet potato to be circulated collecting method every strain |
| CN105532267A (en) * | 2015-12-07 | 2016-05-04 | 崔学晨 | Ornamental tree-shape tomato self-strain stem-vine pup joint anti-premature senility method |
| CN111201934A (en) * | 2018-11-22 | 2020-05-29 | 赵志明 | Intermediate stock rooting cultivation method for avocados |
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Open date: 20090708 |