Control of pear scale
(1) quarantine and prevention. Quarantine inspection of seedlings, scions and fruits to prevent transmission.
(2) artificial and agricultural cultivation control. Combined with winter and spring bark scraping, the branches overwintering generation brush and destroy; but also do a good job in the comprehensive control of nearby apples, pears and other orchards, in order to prevent the spread of wind and large insects, pay attention to pruning insect branches.
(3) protect and make good use of natural enemy resources. Conditional jujube orchard can be raised artificially and release natural enemies. The main natural enemies are: red lip ladybug, kidney spotted lip ladybug, jumping wasp and birds and so on.
(4) Chemical control. Just before sprouting, the branches were sprayed with 5 Baumetu stone sulfur mixture, or 8-10 times turpentine mixture. During the emergence period of males and the initial emergence of larvae, that is, in the middle of May, the middle of June, the middle of July, the first and middle of August, the available insecticides can be used in the control of jujube pink scale. In order to improve the control effect, 400 times 600 times washing powder (neutral) solution can be added when using the medicine.
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Control methods of jujube mad disease
1. Symptoms Jujube Mad Disease, also known as witches' broom disease, broom disease, fire dragon disease, is a devastating disease. Fruit growers call it "mad jujube tree" or "male jujube tree". Both aboveground and underground parts of jujube trees can be infected. The aboveground infection was mainly characterized by floral organ degeneration, bud germination and abnormal growth, resulting in clusters of branches and leaves, extension of the hanging end of jujube, bright veins, yellowing or curling of tender leaves, and occasionally ear-shaped leaves. The disease in the underground part is mainly manifested as a cluster of roots and tillers. The whole flower organ of the diseased tree was degenerated into a vegetative organ, and the flower stalk was prolonged, which was 5-7 times longer than that of the healthy flower.
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Jujube Variety-- Jinsixin 2
Selected from the seedlings of Jinsixin No. 2. The fruit is long tube-shaped, flat at both ends and slightly thicker in the middle. The average fruit weight is 10ml 20g, neat size, thin pericarp, toughness, light brownish red, bright and bright. The pulp has dense cells, more juice, extremely sweet and sour taste, no miscellaneous flavor, and contains 40% of soluble solids, which is the highest of all jujube varieties at present. The edible rate is 97.3%, and the fresh food quality is excellent. The sugar content of the fruit accumulated early, and the soluble solids reached 23% in the white ripening stage and 33% in the semi-red stage.
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