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Korla Fragrant Pear Open-Center Training Technique and Cultivation Key Points
In order to continuously raise the level of orchard industry development, the "dwarf, dense, early, high-yield" cultivation technique should be adhered to in fragrant pear orchard management, and management should follow the six-character policy of "slow, drop, control, promote, cut, even." 1. Conditions and methods for open-center reshaping. 1. Fragrant pear trees over 25 years old are basically the traditional three-main-branch delayed open-center form, and the tree form has already set. If the tree form is complete, the three or four main branches at the base are sound, and the canopy has already filled the space, the central leader can be directly dropped for open-center; if the lower main branches are incomplete, with only 1~
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Morphological Characteristics and Damage of the Jujube Carpenter Moth
The jujube leopard carpenter moth belongs to the order Lepidoptera, family Zeuzeridae. It is also called the trunk-cutting worm. The adult has a body length of 18-22 mm, a white head, a grayish-white thorax and abdomen, filiform antennae, and 6 blue spots on the back of the thorax arranged in 2 longitudinal rows. The forewings are scattered with irregular blue spots of varying sizes, while the area before the submedian fold of the hindwings is covered with narrow blackish-blue transverse bands, and the marginal spots of the wings are darker in color. The back of each abdominal segment has 3 black longitudinal spots and one round spot on each side. The eggs are spherical, pale yellow when newly laid, and densely covered with reticulate sculpturing. The larva has a body length of 30-40 mm, a yellowish-brown head, a purplish-red trunk, and a black pronotum
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Key management points for greenhouse apricot trees after entering spring
Key management points for greenhouse apricot trees in spring. For apricot trees in winter-warm greenhouses, the fruit development period runs from mid-February to the end of April. This period is divided into three main development stages. The first stage is the apricot tree's first rapid growth period and new shoot growth period, lasting 28-34 days; the second stage is the pit-hardening period, lasting 8-12 days; the third stage is the apricot fruit's second...
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Persimmon trees need timely winter pruning when they enter the full fruit-bearing stage
The pesticides suitable for controlling sweetpotato whitefly include acetamiprid, clothianidin, mineral oil, thiamethoxam (Actara), nitenpyram, pymetrozine, bifenthrin, abamectin, matrine, imidacloprid, chlorpyrifos, etc. These pesticides can be selected to control sweetpotato whitefly on persimmon trees. With long-term single-pesticide use, sweetpotato whitefly is prone to developing resistance...
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How should apple trees be pruned after entering an "on" year?
How should apple trees be pruned in an "on" year? Please provide guidance on the pruning principles for "on" year trees. On the premise of ensuring the current year's yield, appropriately control the amount of flowers and fruits retained, reduce consumption, increase accumulation, and promote flower bud formation. The specific methods are: 1. "On" year trees have many flower buds. To reduce flower buds and improve ventilation and light conditions, thin out or cut back poorly positioned auxiliary branches and large scaffold branches; thin out overly dense fruiting branches or fruiting branch groups; the outer extension branches should be cut at a plump bud, and the one-year-old excessively long branches below them should be appropriately thinned; for one-year-old vegetative branches in the inner canopy, except for specially long ones that are cut back, generally prune lightly or not at all, so as to form a certain number of flower buds for the "off" year.
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