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Prevention and treatment method of freezing damage of loquat flower and fruit

A loquat flower and jelly technology, which is applied in the field of crop freeze damage control and loquat flower and fruit freeze damage control, can solve the problems of restricting the sustainable development of loquat, reducing the production of loquat, affecting the yield and quality of loquat, etc.

Inactive Publication Date: 2011-08-03
SICHUAN AAS HORTICULTURE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, it blooms and sets fruit in autumn and winter, and the low temperature in winter coincides with the bud stage, flowering stage, and young fruit stage. Loquats are susceptible to different degrees of freezing damage, resulting in a substantial reduction in production
In recent years, with the deterioration of the global climate and environment, the frequency of natural disasters such as frost has increased, which has affected the yield and quality of loquat to varying degrees, and has become a bottleneck restricting the sustainable development of loquat.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A kind of control method of loquat flower jelly damage, its way is:

[0018] During the flowering and fruit setting period of loquat in autumn and winter, according to the weather forecast, three days before the arrival of the frost weather with the daily minimum temperature below zero or the daily maximum relative humidity of 95% (if the frost is forecast to come on the 20th, it will be on the 17th). The loquat tree canopy was sprayed with 2g / L CaCl 2 solution.

[0019] Within 7 days after the frost weather comes (if the frost comes on the 20th, then within 21-27 days), through field tests, the freezing damage index of loquat fruit is all lower than 40%. Therefore no post-processing measures are required.

Embodiment 2

[0021] A kind of control method of loquat flower jelly damage, its way is:

[0022] During the flowering and fruit setting period of loquat in autumn and winter, according to the weather forecast, spray CaCl with a concentration of 3g / L on the crown of the loquat tree 5 days before the arrival of frost weather with the daily minimum temperature below zero or the daily maximum relative humidity greater than or equal to 95%. 2 solution.

[0023] This example is spraying CaCl to the crown of loquat tree 2 2 days after the solution (such as spraying CaCl on the 20th 2 Solution, then on the 22nd), also smoke the orchard, mulch the crown and bag the fruit.

[0024] Within 7 days after the onset of frost weather, the freezing damage index of loquat fruit reached 90% through field tests. , so use gibberellin 200mg·kg -1 And piroxuron 20mg·kg -1 Soak the loquat fruit with the mixed solution, and carry out bagging after the water on the surface of the fruit is dried.

Embodiment 3

[0026] A kind of control method of loquat flower jelly damage, its way is:

[0027] During the flowering and fruit setting period of loquat in autumn and winter, according to the weather forecast, spray CaCl with a concentration of 1g / L on the crown of loquat trees 4 days before the arrival of frost weather with the daily minimum temperature below zero or the daily maximum relative humidity greater than or equal to 95%. 2 solution.

[0028] This example is spraying CaCl to the crown of loquat tree 2 1 day after the solution (such as spraying CaCl on the 20th 2 solution, then on the 21st), smoke the orchard, mulch the crown and bag the fruit.

[0029] Due to the large temperature drop in frosty weather, the freezing damage index of loquat fruit reached 85% in field tests within 7 days after the frosty weather came. Therefore, with gibberellin 150mg·kg -1 and pyroxuron 15mg·kg -1 Soak the loquat fruit with the mixed solution, and carry out bagging after the water on the sur...

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PUM

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Abstract

The invention discloses a prevention and treatment method of the freezing damage of loquat flower and fruit, which comprises the following step of: spraying a CaCl2 (calcium chloride) solution with the concentration of 1-3g / L to a crown of a loquat tree 3-5 days before the coming of frosty weather with the daily minimum temperature of below zero DEG C or the daily highest relative humidity of larger than or equal to 95% according to the weather forecast during the during the period of blossom and fructify of the loquat tree in autumn and winter. When the method is adopted, the influence on loquat due to the freezing damage can be effectively reduced; loss is reduced; the period of growth and recovery of the loquat after the freezing damage is shortened; the fruit quality of the loquat is improved; the yield is increased; the method is beneficial for early maturing; and the economic benefit of peasants is increased.

Description

technical field [0001] The invention belongs to the technical field of preventing and controlling freezing damage of crops, in particular to the technical field of preventing and controlling freezing damage of loquat flowers and fruits. Background technique [0002] Loquat is a health-care fruit originating in China. It is warm and humid in nature and has broad development prospects. Generally, it blooms and sets fruit in autumn and winter, and the low temperature in winter coincides with the bud stage, flowering stage, and young fruit stage. Loquats are susceptible to different degrees of freezing damage, resulting in a substantial reduction in production. In recent years, with the deterioration of the global climate and environment, the frequency of natural disasters such as frost has increased, which has affected the yield and quality of loquat to varying degrees, and has become a bottleneck restricting the sustainable development of loquat. Therefore, understanding the ...

Claims

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Application Information

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IPC IPC(8): A01G17/00A01G7/06C05D3/00
Inventor 孙淑霞李靖陈栋谢红江江国良
Owner SICHUAN AAS HORTICULTURE RES INST
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