Control of plum peach borer
Symptom
The hatched larvae are eaten into the fruit from the base of the pedicel and into the fruit along the core, and the gum and brown feces excreted by the worms are affixed to the fruit surface, so that the feces of the worms are overflowing and unedible.
Prevention and cure method
During the peak spawning period of the first and second generations of adults from April to May, when most of the eggs on the fruit turn red, spray 2.5% deltamethrin 2500 times, 50% phoxim EC 1000 times, and 40% omethoate 1000 times.
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Processing technology of low-sugar jujube
① production process: raw material selection → graded → cleaning → slotted → sugar boiling → impregnating → baking → shaping → drying → graded → packaging. ② process essentials: raw material selection: Yuanling jujube, such as big, small kernel, loose meat, thin skin and so on, should be harvested in "brittle ripe period" to eliminate insect pests and rotten jujube. Classification: it is divided into three levels according to large, medium and small, and processed separately. Seam: use row needle to draw longitudinally, the grain distance is about 1 mm. The skin can be cut, the stripes should be neat, and the two ends should be scratched as far as possible. in order to prevent browning, directly after scratching.
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What are the damage characteristics and living habits of jujube leaf tick
Jujube leaf tick is commonly known as gray leaf disease, fog disease, fire dragon and so on. It uses adults and nymphs to harm jujube leaves, flowers and fruits. The injured leaves are gray and white, the mesophyll thickens and becomes brittle, when the leaf epidermis is necrotic, the photosynthetic capacity is lost, the leaves curl and fall easily, and the calyx can not bloom after being killed. The jujube leaf tick occurs for more than three generations a year, overwintering as adults or nymphs in jujube bud scales. The insect has three damage peaks in a year, that is, the end of April, the end of June and the middle of July, each lasting 10-15 days. Beginning in early August
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