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Method for ecologically controlling psylla chinensis damage

A pear psyllid and ecological technology, which is applied to the field of ecological control of pear psyllid damage, can solve the problems of high pesticide content in pear fruit and poor control effect of pear psyllid resistance, and achieves the effects of improving plant diversity, reducing pesticide residues and reducing pollution.

Inactive Publication Date: 2015-04-29
ANHUI AGRICULTURAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved in the present invention is to provide a method for ecologically controlling the damage caused by the psyllid, so as to overcome the defects of the existing insecticides in preventing and controlling the resistance of the psyllid and the high content of pesticides in the pear fruit.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The row spacing of pear trees is 4m×8m, and the trees grow robustly. Sow 2.0kg of white clover per acre of pear orchard, which can be sown in drill. The sowing date is April 20. Dilute 180ml of 0.3% SAVONA 1200 times with 50% of conventional pesticides and spray it. The application period is respectively in the peak period of overwintering adults, and 2 days before the peak period of the first to fourth generation nymphs and adults. The results of the sampling survey showed that the populations of all generations of nymphs and adults and the leaf damage rate in the white clover intercropping + biological pesticide area were significantly lower than those in the clear tillage bare land conventional application area.

Embodiment 2

[0015] The row spacing of pear trees is 4m×8m, and the trees grow robustly. Sow 2.6kg of white clover per acre of pear orchard, which can be sown in drill. The sowing date is April 30. Mix and spray 240ml 0.3% SAVONA diluted 1200 times with 50% of conventional pesticides. The spraying period is respectively in the peak period of overwintering adults, and 3 days before the peak period of the first to fourth generation nymphs and adults. The results of the sampling survey showed that the populations of all generations of nymphs and adults and the leaf damage rate in the white clover intercropping + biological pesticide area were significantly lower than those in the clear tillage and bare land conventional application area.

Embodiment 3

[0017] The row spacing of pear trees is 4m×8m, and the trees grow robustly. Sow 2.3kg of white clover per acre of pear orchard, which can be sown in drill. The sowing date is April 25. Mix and spray 210ml 0.3% SAVONA diluted 1200 times with 50% of conventional pesticides. The application period is respectively in the peak period of overwintering adults, and 2 days before the peak period of the first to fourth generation nymphs and adults. The results of the sampling survey showed that the populations of all generations of nymphs and adults and the leaf damage rate in the white clover intercropping + biological pesticide area were significantly lower than those in the clear tillage and bare land conventional application area.

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PUM

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Abstract

The invention relates to a method for ecologically controlling psylla chinensis damage. The method includes keeping planting space of pear trees as 4 m X 8 m, sowing 2.0-2.6 kg of intercrops in each mu of a pear garden during April 20th to 30th, diluting 10.3% of SAVONA in 180-240 ml by 1200 times, mixing with 50% of conventional application insecticide and spraying. By intercropping perennial plants such as white clover or platycodon, plant diversity is improved, and natural enemies are protected and assisted in migration. Meanwhile, nymph secretion is broke down by spraying the biological chemical SAVONA rich in kali salt, and sustainable control of psylla chinensis damage can be realized with coordinative action of the SAVONA and the kali salt. By the method, usage of the chemical pesticide is greatly reduced as well as environmental pollution by application of the chemical pesticide, and pesticide residue on pears is decreased. In addition, sowed intercrops can be used for many years, so that the method is green and environment friendly, simple in operation, good in control effect and wide in application prospect.

Description

technical field [0001] The invention relates to a method for ecologically controlling damage caused by pear psyllids, and its technical field belongs to the subject of plant protection. Background technique [0002] The Chinese pear psyllid (Psylla chinensis) was originally an important pest of pear trees in Northeast and North China parts of my country. Now it has spread all over the country and its damage is rampant. The damage rate in some pear orchards is almost 100%. It poses a great threat to yield and quality. Since the 1980s, a large number of broad-spectrum insecticides such as pyrethroids have been used in pear orchards. Although the damage of the small pear borer (Grapholitha molesta) has been effectively controlled, it has also killed the natural enemies of the Chinese pear psyllid. Linglings, ladybugs, spiders, parasitic wasps, etc. have caused the Chinese pear psyllid to lose the effective control of natural enemies, thus breaking out into disasters. The harm ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G17/00A01G1/00
CPCA01G17/005A01G13/00A01G22/00
Inventor 巫厚长张建设赵印勇刘须祥花日茂
Owner ANHUI AGRICULTURAL UNIVERSITY
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