Peach variety: dawning
Zhengzhou Fruit Tree Research Institute of Chinese Academy of Sciences was bred by crossing Ligant × Ruiguang 2.
The fruit is nearly round, with an average single fruit weight of 90rel 100g and a maximum fruit weight of 150g; the appearance is bright and bright red; the pulp is yellow, soluble, sweet and fragrant; the content of soluble solids is about 10%. Sticky core. The fruit matured in the first ten days of June and the fruit development period was 65 days.
This variety is a very precocious yellow flesh sweet nectarine. Gorgeous appearance, all-red type, sweet flavor. Large flower type, large amount of pollen, strong tree potential and high yield.
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Incidence regularity and control techniques of iron skin disease of jujube
Jujube iron skin disease, also known as fruit shrinkage disease, black rot, commonly known as fog scald, fog Liaotou, dry waist, black waist, iron coke, fire and so on, is a serious fruit disease of jujube. Since the early 1980s, the disease has become more and more serious. It begins before and after coloring, the disease is fast and concentrated, and it often breaks out. Many jujube producing areas, such as Hebei, Henan, Shandong, Shanxi, Inner Mongolia, Guangxi, Sichuan and so on, have occurred. In general years, the yield loss caused by the disease is 20%, 50%, and in serious years, the loss is up to 70%, 80%, and even appears.
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Jujube gall midge
Distribution and host this insect belongs to the order Pteroptera, Culicidae. Distributed in Hebei, Shaanxi, Shandong, Shanxi, Henan and other jujube producing areas. The hosts are jujube tree and wild jujube tree. The harm and symptoms are that the larvae suck the juice of jujube or sour jujube buds and leaves and stimulate the mesophyll tissue to make the injured leaves roll longitudinally to the leaf surface. The injured site changed from green to purplish red, hard and brittle, soon blackened and withered, and there were often several heads and even larvae in a roll of leaves. Morphological characteristics 1. The adult female is 1.4mm to 2.0mm long; the compound eye is black, reniform; touching.
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