Control of jujube gall midge
Also known as jujube bud maggot, damage jujube tree buds and young leaves. This insect occurs early, has many generations and has a long damage period. it has a great influence on the development of seedlings, young trees and the fruiting of adult trees. it is one of the main leaf pests of jujube trees. The insect has 5 Mel 7 generations a year in North China, overwintering with mature larvae forming cocoons in the soil, adults Eclosion and oviposition in April next year, and the first ten days of May is the peak period of damage.
Prevention and control methods:
1. Spraying on the ground with 1000 times of trichlorfon powder or 25% phoxim, combined with turning over the garden to eliminate overwintering insects.
2. The crown spray sprays "1605" 1500 times when the larvae occur or (when there is no fruit), and 40% omethoate 1000 times in the fruit stage to kill the larvae.
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High quality Pear Variety-Daguo Crystal
The tree is strong and upright, but the tree is moderate and strong after the fruit. The leaves are large, the tender leaves are large and thin, yellowish green, with light brown and few hairs. The sprouting ability is weak and the branching ability is medium. Early fruit, bearing fruit three years after planting. The fruiting ability of axillary flower buds is strong, and the young trees can bear fruit in the second year after height grafting. More pollen, strong affinity with July crisp, lucky water and so on, and high fruit setting rate. The variety has strong adaptability, cold resistance, drought resistance, resistance to scab, anthracnose and ring streak. In rainy areas and years, leaves are easy to be infected with black spot and brown spot, so attention should be paid to control.
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Fine peach varieties with late autumn and winter maturity bred in Huaning, Yunnan Province
Huaning County Science and Technology Development Company of Yunnan Province leased 400 mu of land in Dongjiashan, Ningzhou Town, established high-quality economic fruit science and technology demonstration garden, screened, cultivated and demonstrated excellent economic fruit varieties, explored high-yield cultivation techniques of economic fruits, and provided excellent economic fruit seedlings for the masses. After six years of cultivation experiments, excellent late-maturing autumn and winter peach varieties suitable for popularization and cultivation in the area of 1600~1800 meters above sea level were selected from 54 peach varieties, and 350 mu of demonstration cultivation was conducted. Fine autumn and winter peach
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