Method for chemically thinning pears

A kind of fruit thinning and chemical technology, which is applied in the direction of botany equipment and methods, horticultural methods, chemicals for biological control, etc., can solve the problems of heavy fruit thinning workload and large fruit hanging amount, and achieve high safety effect

Inactive Publication Date: 2019-04-05
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the practical problem of large fruit-hanging and heavy fruit-thinning workload in the growth process of pear trees, based on this, the present invention has screened out a kind of fruit-thinning agent that can promote pear tree fruit-thinning through a large number of preliminary experiments, in order to improve the pear-tree fruit-thinning agent. Fruit Thinning Efficiency Provides Realistic Guidance and Offers a Methodology for Improving Efficiency of Young Pear Fruit Thinning Using Selected Thinning Agents

Method used

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  • Method for chemically thinning pears
  • Method for chemically thinning pears
  • Method for chemically thinning pears

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: Initial screening of fruit thinner

[0029] (1) Implementation process

[0030] 1. Implementation conditions

[0031] Implementation location: Jiangpu pear germplasm resource nursery of Nanjing Agricultural University. The germplasm resource nursery is located in the lower reaches of the Yangtze River. It belongs to a subtropical monsoon climate zone. The annual average temperature is 15.6℃, the average sunshine is 2009h, and the annual precipitation is 1028mm. The soil is sandy loam, soil, fertilizer and water management. The level is better.

[0032] Meteorological conditions: The weather was clear when the agent was sprayed, and there was no strong wind or continuous rainfall.

[0033] Implementation tools: glass rod, beaker, measuring cylinder, marker, tag, pencil, spray bucket

[0034] 2. Fruit thinner formula

[0035] After a lot of pre-processing, the following 5 agents were screened out:

[0036] (1) 1000mg / L ethephon + 2ml / L triethanolamine

[0037] (2) 20mg / L na...

Embodiment 2

[0057] Example 2: Secondary screening of fruit thinner

[0058] (1) Implementation process

[0059] For the second screening formula, spray again.

[0060] 1. Spraying period

[0061] In order to improve the reliability of the data, to compare the difference in fruit setting rate of spraying agents in different periods, two batches of fruit trees to be processed were set up, respectively before the first physiological fruit falling period (two weeks after the full bloom period) and before the second physiological fruit falling period (Four weeks after full bloom) spray.

[0062] 2. Agent spraying plan

[0063] According to the method of dissolution and configuration, the medicines are prepared for immediate use. Following the principle of randomness, each medicine is sprayed on three trees, and 20 tidbits are randomly selected from each tree for listing, marking the name of the medicine and the initial number of young fruits. In addition, choose sunny and windless weather after 4 pm, s...

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Abstract

The invention discloses a method for chemically thinning pears. The method includes spraying thinning agent aqueous solution before first physiological fruit dropping periods (two weeks after full-blossom periods) or before second physiological fruit dropping periods (four weeks after the full-blossom periods). Thinning agents are compositions of ethephon and triethanolamine. The method has the advantages that fruit dropping of pear trees can be obviously promoted if the thinning agents are sprayed before the first physiological fruit dropping periods or the second physiological fruit droppingperiods of the pear trees; theoretical bases and practical guidance can be provided to thinning the pears of the pear trees by the thinning agents screened by the aid of the method, accordingly, thefruit dropping efficiency of the pear trees can be effectively improved, reasonable load on the pear trees can be promoted, and the manual thinning cost can be reduced.

Description

Technical field [0001] The invention belongs to the technical field of fruit tree cultivation, and specifically relates to a method for chemical fruit thinning of pears. Background technique [0002] Pear is a plant of the genus Pyrus in the Pomaceae subfamily (Rosaceae), and is an important deciduous fruit tree worldwide. The inflorescences of pear trees are mostly corymbs, and most varieties have 5-6 flowers per inflorescence. Under normal conditions, each inflorescence has 5-6 fruits. However, during the growth of the pear tree, the excessive amount of flowers and fruits will consume the organic nutrients of the pear tree, affect the nutrient accumulation of the year, and also have an adverse effect on the flower bud differentiation in the second year. The fruit quality will be seriously damaged. Conducive to the commercial production of pears. In order to improve the quality of pears and achieve high and stable yields, pear trees with large flowers and fruits must be thinn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N57/20A01N33/08A01P21/00A01G7/06A01G17/00
CPCA01G7/06A01G17/005A01N33/08A01N57/20
Inventor 张绍铃马敏吴潇王利斌王莉齐开杰张臻张虎平陈杨杨胡轼
Owner NANJING AGRICULTURAL UNIVERSITY
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