The artificial cultivation of the fruit scorpion is still in the early stage of development. Compared with the wild scorpion, the species and quantity of eggs on the tree of the big fruit scorpion are in a very small stage, and the big fruit scorpion is inherently resistant to pests and diseases , so the pests are compared. less. The main pests and control methods of the big fruit scorpion are now introduced as follows:
(a), tamping weevil [hazard]
It is a sturdy weevil, also known as a real elephant, a scorpion. Adult buds, young leaves and tender branches are used to make the buds incomplete, the young leaves are pinhole-shaped, and the shoots are broken, which affects the growth of new shoots. The adult can also puncture the young fruit into the slender head tube, and feed the young embryos in the young fruit, so that the fruit forms a brown brown shrinkage, the young embryo stops developing, and the fruit falls off early. When the larva breaks into the fruit, it will eat some or all of the medlar and place the feces in the fruit.
This pest occurs in the wild sorghum in the northeastern part of the country. The pest has not been found in the cultivated garden, but it is necessary to be vigilant and prevent the pest from passing through the cultivation garden.
[Life History and Habits]
The insect occurred in Liaoning for two generations in two years, and a few were three years and one generation. After 2 years and 1 generation, after 3 years, the mature larvae and adult worms often winter in the soil. Unearthed in early May of the following year, it began to move under the litter. In mid-May, adults became on the tree and began to feed on young leaves. Adults enter the peak in late May. In the middle and late June, the young fruit development period of the scorpion was started. At this time, the adult worms began to mate and lay eggs in the young fruit. In mid-July, it is the peak of spawning, and the egg period is 10 to 14 days. In July, Shangdian hatched into larvae in the fruit, and in mid-to-late July it was the incubation period. The larvae feed for nearly one month in the fruit and develop into mature larvae. In early August, when the capsules became more mature, the mature larvae fell to the ground with fruit, and after breaking the fruit, they drilled into the soil 20 to 30 cm deep to prepare for winter. The middle and late August is a land-filling period. In the third year of the third year, it began to degenerate.
In late July, it entered the peak of the phlegm and flood season, and the flood season was about half a month. New adult worms began to appear in mid-July, and the mid-August was the adult feathering period. The newly emerged adult was not unearthed in the same year, and it was transferred to the wintering state.
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