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Method for controlling scale insects of citrus trees

A technology of scale insects and citrus, which is applied in the agricultural field, can solve problems such as less shoots, falling flowers and fruits, affecting citrus tree vigor and yield, and achieve the effect of restoring tree vigor and yield

Inactive Publication Date: 2018-05-25
林青霞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also root mealybugs that harm the roots, which mainly suck juice from the roots, causing root rot. The upper part shows yellowing, less shoots, and flower and fruit drop, which affects the vigor and yield of citrus trees.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] A method for preventing and controlling scale insects in citrus trees, comprising the following steps: (1) Quarantine of seedlings, disinfecting seedlings with parasitic scales to prevent transmission, fumigation with methyl bromide is commonly used, seedlings must be covered with soil, and the amount of medicine per square meter box 40ml, fumigated for 4 hours; (2) Prune off dense branches and insect branches in winter, keep the orange orchard ventilated and light-transmitting, causing unsuitable habitat for scale insects, and spray lime sulfur mixture to seal the garden; (3) Drug control: within 4-5 During the first egg incubation period of the scale insect, spray continuously every other week, 48% chlorpyrifos 1000 times, 1.8% abamectin 1800 times, 5% acetamiprid EC 2000 times, 25% buprofezin wettability Powder 1000 times, 10% imidacloprid 2000 times; preferably, drug control can also be sprayed to kill the 1st instar nymphs during the nymph hatching period, and then ...

Embodiment 2

[0011] A method for preventing and controlling scale insects in citrus trees, comprising the following steps: (1) Quarantine of seedlings, disinfecting seedlings with parasitic scales to prevent transmission, fumigation with methyl bromide is commonly used, seedlings must be covered with soil, and the amount of medicine per square meter box 60ml, fumigated for 4 hours; (2) Cut off dense branches and insect branches in winter, keep the orange orchard ventilated and light-transmitting, causing unsuitable habitat for scale insects, and spray lime sulfur mixture to seal the garden; (3) Drug control: within 4-5 During the first egg incubation period of the scale insect, spray continuously every other week, 48% chlorpyrifos 1000 times, 1.8% abamectin 1800 times, 5% acetamiprid EC 2000 times, 25% buprofezin wettability Powder 1000 times, 10% imidacloprid 2000 times; preferably, drug control can also be sprayed to kill 1st instar nymphs during the nymph hatching period, and then spray ...

Embodiment 3

[0013] A method for preventing and controlling scale insects in citrus trees, comprising the following steps: (1) Quarantine of seedlings, disinfecting seedlings with parasitic scales to prevent transmission, fumigation with methyl bromide is commonly used, seedlings must be covered with soil, and the amount of medicine per square meter box 40-60ml, fumigated for 4 hours; (2) Cut off dense branches and insect branches in winter, keep the orange orchard ventilated and light-transmitting, causing scale insects to live unsuitably, and spray stone sulfur mixture to seal the garden; (3) Drug control: within 4 -The first egg hatching period of scale insects in May, continuous spraying every other week, 48% chlorpyrifos 1000 times, 1.8% abamectin 1800 times, 5% acetamiprid EC 2000 times, 25% buprofezin Wettable powder 1000 times, 10% imidacloprid 2000 times; preferably, drug control can also be sprayed to kill the 1st instar nymphs during the nymph hatching period, and then spray agai...

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Abstract

The invention discloses a method for controlling the scale insects of citrus trees. The method includes the following steps: (1) performing quarantine of seedlings, disinfecting seedlings with scale insects, commonly using methyl bromide for fumigation, causing the seedlings to have soil, using a pesticide amount of (40-60) ml for every square meter, and performing fumigation for 4 h; (2) in winter, cutting off too dense branches and worm branches, keeping a citrus orchard ventilated and transparent, creating an environment not suitable for survival of the scale insects, and spraying lime sulfur mixture to seal the orchard; (3) performing pesticide prevention: in the first egg hatching period of the scale insects in April to May, spraying 1000-fold liquid of 48% chlorpyrifos, 1800-fold liquid of 1.8% avermectin, 2000-fold liquid of 5% acetamiprid missible oil, 1000-fold liquid of 25% buprofezin wettable powder and 2000-fold liquid of 10% imidacloprid every other week; (4) performing biological control: as there are many kinds of scale insect natural enemies, strengthening the protection and performing artificial transfer and breeding release, concentrating the cut branches with thescale insects to an outer space outside the orchard, and burning the branches after a period of time. According to the method for controlling the scale insects of citrus trees, the scale insects canbe effectively controlled, and the vigor and yield of the citrus trees are recovered.

Description

technical field [0001] The invention relates to the field of agriculture, in particular to a method for controlling scale insects in citrus trees. Background technique [0002] There are many kinds of citrus scale insects. Adults are protected by wax shells and have strong resistance to pesticides, so it is difficult to control them. It is very important to grasp the control of nymphs in April to May, which can achieve twice the result with half the effort. Several scale insects that are more harmful now are: Yajian scale, blown scale, brown round scale, black spot scale and red wax scale. Both nymphs and female adults gather on leaves, branches and fruits to suck juice. There are also root mealybugs that harm the roots, which mainly suck juice from the roots, causing root rot. The upper part shows yellowing, less shoots, and flower and fruit drop, which affects the vigor and yield of citrus trees. Contents of the invention [0003] The purpose of the present invention i...

Claims

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Application Information

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IPC IPC(8): A01G17/00A01G13/00
CPCA01G17/005A01G13/00
Inventor 林青霞
Owner 林青霞
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