CN103650841B - Method for promoting maturation and normal blooming of EuCahetus dunnii Maiden flower bud - Google Patents
Method for promoting maturation and normal blooming of EuCahetus dunnii Maiden flower bud Download PDFInfo
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- CN103650841B CN103650841B CN201310537878.4A CN201310537878A CN103650841B CN 103650841 B CN103650841 B CN 103650841B CN 201310537878 A CN201310537878 A CN 201310537878A CN 103650841 B CN103650841 B CN 103650841B
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Abstract
Disclosed is a method promoting maturation and normal blooming of a EuCahetus dunnii Maiden flower bud. The method comprises the steps of (1) applying water-retention solvent, wherein a circular groove which is 20cm wide and 20cm deep is dug around a stump at a position 50cm away from the stump, and the water-retention solvent is applied at 1000g/plant in September; (2) applying fertilizer, wherein special compound fertilizer with a constitute ratio of nitrogen: phosphorus: potassium = 13-17 : 5-7 : 8-10 and total effective nutrient content >= 30% is applied to the two sides of the projection of a tree crown in August at 500g/plant; (3) spraying plant hormones, wherein gibberellin with a concentration of 800-1000mg/L is sprayed onto the crown of a whole tree in a mist mode with an air pressure type sprinkler in sunny days once a month till water drips from leaf apexes. The method can effectively promote maturation and normal blooming of the EuCahetus dunnii Maiden flower bud, the technical measure is simple, cost is low, and the effect is remarkable.
Description
Technical field
The present invention relates to forest genetics technical field, specifically a kind of promotion E. dunnii flower bud development is ripe to method of normally blooming.
Technical background
It is fast that eucalyptus has growth, and rotation is short, timber yield high, has critical role and outstanding role in south China forest development.Along with the continuous expansion of Eucalyptus Planting area, the torrid zone, south, ground suitable for afforestation, subtropics constantly reduces, eucalyptus is moved northward becomes inevitable trend, and low temperature is the key factor that restriction eucalyptus is moved northward, E. dunnii is a kind of excellent winter hardy tree species, becomes the first-selected seeds of popularizing planting northwards.E. dunnii growth rapidly, form logical straight, tolerance to cold is strong, recent years is very fast at the development speed of China, is the important reproducting tree species in Hunan, Fujian and In Northern Guangxi area.E. dunnii vegetative propagation is very difficult, also has no the report of China E. dunnii seed orchard seeding simultaneously, limits E. dunnii and further develop.The development of China E. dunnii forest plantation mainly relies on import seed seedling-raising to afforest, and present import E. dunnii seed is more and more difficult, and expensive, therefore strengthens the basic research that China E. dunnii forest blossoms and bears fruit particularly important.E. dunnii can form bud in Guangxi northwest, but reach maturity further and be obstructed, principal phenomena is that bud undeveloped mature just comes off, seed can not be formed, research E. dunnii forest flower bud development maturation method, for the solid generation seed of E. dunnii establishes technical foundation, to blossom and bear fruit problem to solve E. dunnii, produce for E. dunnii breeding and technical support is provided, important theory significance and realistic meaning are northwards advanced to E. dunnii breeding and eucalyptus industry.
Summary of the invention
The object of this invention is to provide and a kind of promote that E. dunnii flower bud development is ripe to method of normally blooming, the method can effectively promote E. dunnii bud be developed to normally bloom, and technical measures are simple, and cost is low, Be very effective.
The present invention is by achieving the above object by the following technical solutions, and a kind of promotion E. dunnii flower bud development is ripe to method of normally blooming, and comprises the steps:
(1) water conservation solvent is discharged: be 1 gram of water-loss reducer according to the ratio of dry water-loss reducer and water: 260 grams of water, dry water-loss reducer is slowly put into water mix, at least 2 hours are placed after having mixed, be prepared into a kind of water conservation solvent, dig around stub the annular ditch that specification is wide 20cm × dark 20cm at the position ring from stub 50cm, discharge water conservation solvent by 1000g/ strain, earthing covers tightly, and discharges September;
(2) fertilizer is discharged: by nitrogen: phosphorus: potassium=13 ~ 17:5 ~ 7:8 ~ 10, total available nutrient content is the compound fertilizer special of >=30% preparation, respectively digs a pitting, discharge the compound fertilizer special 500g/ strain of preparation in the both sides of crown mapping, mix rear blinding thoroughly, discharge August;
(3) watering plants hormone: gibberellin is first dissolved in the alcohol of 75%, then add water surely molten, concentration is 800 ~ 1000mg/L, selects in the fine morning, and the tree crown of the whole strain tree of vaporific spray, is advisable until blade tip drips, monthly sprays once.
A pitting is respectively dug in the described both sides at crown mapping, and the specification of pitting is long 30cm × wide 10cm × dark 10cm.
Outstanding advantages of the present invention is:
(1) research shows, the equal application process of equal consumption, and a kind of technical measures flower bud development of single administration effect is poor, 3 kinds of technical measures with the use of, the nutrient needed for flower bud growth and moisture can be ensured, promote growing of bud, improve the flowering rate of bud;
(2) technical measures are simple, convenient, and use cost is low, successful.
Embodiment
Below by way of specific embodiment, technical scheme of the present invention is described further.
Embodiment 1
Promotion E. dunnii flower bud development of the present invention is ripe to method of normally blooming, and comprises the steps:
Configuration Gibberellins solution, take gibberellin opaque with electronic balance, be first dissolved in the alcohol of 75%, then add water surely molten, concentration is 1000mg/L.Select the plant having bud, in the fine morning, with the tree crown of the whole strain tree of the vaporific spray of vapour-pressure type water sprager, be advisable until blade tip drips, from flower bud differentiation, monthly spray once, until complete pollination.E. dunnii bud started to sprout at the beginning of 8 months, now to apply fertilizer, ensure the nutritional need of flower bud growth, by nitrogen: phosphorus: potassium=17:5:8, total available nutrient content is the compound fertilizer special of >=30% preparation E. dunnii flower bud development maturation, respectively digs a pitting in the both sides of crown mapping, the long 30cm of the specification × wide 10cm × dark 10cm in hole, apply fertilizer, mix rear blinding thoroughly, fertilizing amount is 500g/ strain.Enter arid season short of rain September, use water conservation solvent and can ensure the moisture that flower bud growth needs.The ratio mixed with water in dry water-loss reducer is 1 gram of dry water-loss reducer: 260 grams of water, dry water-loss reducer is slowly put into water on a small quantity, and in the process, will ceaselessly agitate water, must guard against and put into water by disposable for a large amount of dry water-loss reducers, otherwise it is soluble to be condensed into block, at least places 2 hours after having mixed, prepare a kind of water conservation solvent.Dig around stub the annular ditch that specification is wide 20cm × dark 20cm at the position ring from stub 50cm, be that described water conservation solvent is discharged in 1000g/ strain by amount of application, earthing covers tightly.Result of the test shows: bud flowering rate reaches 91.9%, and when bud is bloomed, diameter is 5.90mm.
Embodiment 2
Promotion E. dunnii flower bud development of the present invention is ripe to method of normally blooming, and comprises the steps:
Configuration concentration is 800mg/L Gibberellins solution, selects the plant having bud, in the fine morning, with the tree crown of the whole strain tree of the vaporific spray of vapour-pressure type water sprager, is advisable, from flower bud differentiation, monthly sprays once, until complete pollination until blade tip drips.E. dunnii bud applies fertilizer when starting to sprout at the beginning of 8 months, by nitrogen: phosphorus: potassium=15:6:9, total available nutrient content is the compound fertilizer special of >=30% preparation E. dunnii flower bud development maturation, a pitting is respectively dug in the both sides of crown mapping, the long 30cm of the specification × wide 10cm × dark 10cm in hole, apply fertilizer, mix rear blinding thoroughly, fertilizing amount is 500g/ strain.Enter arid season short of rain September, dig around stub the annular ditch that specification is wide 20cm × dark 20cm at the position ring from stub 50cm, use water conservation solvent 1000g/ strain, earthing covers tightly.Result of the test shows: bud flowering rate reaches 91.5%, and when bud is bloomed, diameter is 6.03mm.
Embodiment 3
Promotion E. dunnii flower bud development of the present invention is ripe to method of normally blooming, and comprises the steps:
Configuration concentration is 900mg/L Gibberellins solution, selects the plant having bud, in the fine morning, with the tree crown of the whole strain tree of the vaporific spray of vapour-pressure type water sprager, is advisable, from flower bud differentiation, monthly sprays once, until complete pollination until blade tip drips.E. dunnii bud applies fertilizer when starting to sprout at the beginning of 8 months, by nitrogen: phosphorus: potassium=13:7:10, total available nutrient content is the compound fertilizer special of >=30% preparation E. dunnii flower bud development maturation, a pitting is respectively dug in the both sides of crown mapping, the long 30cm of the specification × wide 10cm × dark 10cm in hole, apply fertilizer, mix rear blinding thoroughly, fertilizing amount is 500g/ strain.Enter arid season short of rain September, dig around stub the annular ditch that specification is wide 20cm × dark 20cm at the position ring from stub 50cm, use water conservation solvent 1000g/ strain, earthing covers tightly.Result of the test shows: bud flowering rate reaches 90.9%, and when bud is bloomed, diameter is 6.21mm.
This experimental scheme water-loss reducer, fertilising, plant hormone 3 kinds process, a kind of blank is contrast, totally 13 kinds of combined treatment, each process repeats for 3 times (3 strain tree/process), select have the normal plant of the growth of bud to participate in test, select 39 strain trees altogether, experimental scheme is in table 1.The selected branch of every strain tree is for testing fixed observer, and record bud quantity, measure bud diameter, every month is observed once, until bloom.
Result of the test is in table 2, and result shows: the bud flowering rate of test process 9,4,2 comes first 3, and to use 3 kinds of process better than single treatment effect simultaneously.
Table 1 E. dunnii flower bud development maturation test Treatment Design
The ripe result of the test of table 2 E. dunnii flower bud development
Claims (2)
1. promote that E. dunnii flower bud development is ripe to a method of normally blooming, it is characterized in that, comprise the steps:
(1) water conservation solvent is discharged: be 1 gram of dry water-loss reducer according to the ratio of dry water-loss reducer and water: 260 grams of water, dry water-loss reducer is slowly put into water mix, at least 2 hours are placed after having mixed, be prepared into a kind of water conservation solvent, dig around stub the annular ditch that specification is wide 20cm × dark 20cm at the position ring from stub 50cm, discharge water conservation solvent by 1000g/ strain, earthing covers tightly, and discharges September;
(2) fertilizer is discharged: by nitrogen: phosphorus: potassium=13 ~ 17:5 ~ 7:8 ~ 10, total available nutrient content is the compound fertilizer special of >=30% preparation, respectively digs a pitting, discharge the compound fertilizer special 500g/ strain of preparation in the both sides of crown mapping, mix rear blinding thoroughly, discharge August;
(3) watering plants hormone: gibberellin is first dissolved in the alcohol of 75%, then add water constant volume, and concentration is 800 ~ 1000mg/L, select in the fine morning, the tree crown of the whole strain tree of vaporific spray, from flower bud differentiation, monthly spray once, until complete pollination.
2. the ripe method of extremely normally blooming of promotion E. dunnii flower bud development according to claim 1, it is characterized in that, a pitting is respectively dug in the described both sides at crown mapping, and the specification of pitting is long 30cm × wide 10cm × dark 10cm.
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| CN104115677B (en) * | 2014-07-16 | 2015-11-18 | 广西壮族自治区林业科学研究院 | The method of E. dunnii Grafting Seed Orchard is set up in a kind of selection |
| CN108464182B (en) * | 2018-03-29 | 2020-03-27 | 云南省林业科学院 | Method for promoting blooming and fructification of eucalyptus smith seed orchard and increasing germination rate of seeds |
| CN110226447B (en) * | 2019-07-29 | 2022-01-21 | 中国热带农业科学院香料饮料研究所 | Exogenous gibberellin spike increasing method for pepper |
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| 《邓恩桉优树的选择标准》;陈健波等;《林业科技开发》;20080125;第17-20页 * |
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