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Pretreatment method of drought stress for seedlings of southern pine before afforestation

A drought stress and pretreatment technology, which is applied in the field of drought stress pretreatment of southern pine seedlings before afforestation, can solve the problems of costing seedlings and labor costs, low survival rate of afforestation, and irregular growth stand management, etc., and achieves simple operation , Improve the efficiency of afforestation, save the cost of replanting and management and maintenance

Active Publication Date: 2017-07-07
GUANGXI FORESTRY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The low survival rate of afforestation not only costs the cost of replanting seedlings and labor costs, but also causes many problems such as forest tending and management due to uneven growth of seedlings

Method used

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  • Pretreatment method of drought stress for seedlings of southern pine before afforestation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] seedling preparation

[0021] Slash pine seedlings have been cultivated for 138 days, with an average seedling height of 15.7cm and an average ground diameter of 0.25cm. Select 5,000 seedlings that grow robustly and are free from diseases and insect pests;

[0022] Drought stress before emergence

[0023] From January 5th, 2015, the seedlings prepared in step were subjected to drought stress for 3 consecutive times in the open-air nursery, and the seedlings were watered thoroughly before each stress, and the water control time of the first stress was 3 days (1 From January 5 to 7, rehydration on January 7), on January 5, the mixed solution of paclobutrazol and potassium dihydrogen phosphate was sprayed on the leaves (paclobutrazol 25mg / L+potassium dihydrogen phosphate 0.2%); the second stress water control The time was 12 days (January 8 to 18, rewatering on January 18), the third stress water control time was 30 days (January 19 to February 18), and the leaves were...

Embodiment 2

[0027] seedling preparation

[0028] Masson pine seedlings have been cultivated for 153 days, with an average seedling height of 17.5cm and an average ground diameter of 0.26cm. Select 7,000 seedlings that grow robustly and are free from diseases and insect pests;

[0029] Drought stress before emergence

[0030] From January 3, 2015, the seedlings prepared in step were subjected to drought stress for 3 consecutive times in the nursery greenhouse, and the seedlings were watered thoroughly before each stress, and the water control time for the first stress was 3 days (1 From January 3 to 5, rehydration on January 5), on January 3, the mixed solution of paclobutrazol and potassium dihydrogen phosphate was sprayed on the leaves (paclobutrazol 40mg / L+potassium dihydrogen phosphate 0.3%); the second stress water control The time was 12 days (January 6 to 18, rewatering on January 18), the third stress water control time was 32 days (January 19 to February 20), and the leaves we...

Embodiment 3

[0034] seedling preparation

[0035] Wet plus pine seedlings have been cultivated for 180 days, with an average seedling height of 20.3cm and an average ground diameter of 0.29cm. Select 10,000 seedlings that grow robustly and are free of diseases and insect pests;

[0036] Drought stress before emergence

[0037] From January 10, 2015, the seedlings prepared in step were subjected to drought stress for 3 consecutive times in the open-air nursery, and the seedlings were watered thoroughly before each stress, and the water control time of the first stress was 3 days (1 From January 10 to 12, rehydration on January 12), on January 10, the mixed solution of paclobutrazol and potassium dihydrogen phosphate was sprayed on the leaves (paclobutrazol 50mg / L+potassium dihydrogen phosphate 0.2%); the second stress water control The time was 10 days (January 13 to 22, rewatering on January 22), the third stress water control time was 34 days (January 23 to February 25), and the leave...

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Abstract

The invention discloses a pre-afforestation seedling drought stress pretreatment method of southern pines. The method includes that three consecutive times of drought stress treatment is performed on seedlings before outplanting and afforestation of the southern pines; water control time in seedling stress is prolonged from the first time of 3 days to the third time of around 30 days; outplanting afforestation can be performed after the seedlings are thoroughly watered and three times of stress pretreatment is completed. In different periods of stress, adverse resistance in seedling stages of the southern pines is improved and adjusted by spraying plant foreign aid materials of multi-effect triazole, salicylic acid, indolebutyric acid and monopotassium phosphate on leaf surfaces so as to improve effect in drought stress. Practice shows that seedling drought resistance capability is greatly improved by adopting the method to perform pretreatment before afforestation, survival rate of afforestation is 25%-35% higher than that of a traditional method, afforestation efficiency is remarkably improved, after-planting and management and protection costs are saved, the method is applicable to popularization and application in fast-grown forest construction and engineering afforestation, and important practical significance in development of industrial raw material forests of the southern pines is achieved.

Description

technical field [0001] The invention belongs to the field of cultivating southern pine seedlings, and in particular relates to a method for pretreatment of drought stress on seedlings of southern pine before afforestation. Background technique [0002] Southern pine, such as masson pine, slash pine, and wet plus pine, is an important dual-purpose tree species for resin and wood in southern my country. It has a wide range of uses and high economic value. In addition to the two major uses of wood and pine resin, the whole tree of Masson pine can be used, and the pollen, needles and bark are rich in antioxidant substances, which can be used as excellent anti-aging and antioxidant health products; pine nuts contain 30% oil, which can be used as Make paint, soap and lubricating oil; the cones can be used to extract crude oil; the pine roots can be used to extract pine tar, and it is also possible to cultivate a precious Chinese medicinal material - Poria cocos. [0003] Guangxi ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G17/00
CPCA01G17/005
Inventor 杨章旗冯源恒贾婕谭健晖
Owner GUANGXI FORESTRY RES INST
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