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What are the methods for preventing and controlling fruit drop in persimmon trees?
How do you prevent and control fruit drop in persimmon trees? Please give an introduction to the prevention and control methods. The causes of fruit drop in persimmon trees include two situations: physiological fruit drop caused by the physiological disorder of the persimmon tree itself, and fruit drop caused by diseases and pests such as anthracnose or persimmon fruit moth. To prevent and control persimmon fruit drop, first, pollinator tree varieties need to be arranged, and pollinator trees must be planted or...
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What are the cultivation methods for black-skinned winter melon?
How do you grow black-skinned winter melon well? Is there detailed technology to refer to? Black-skinned winter melon likes warmth and tolerates heat, with an optimum growing temperature of 22-28°C. Winter melon is not strict about light; if seedlings are kept at around 16°C with 11 hours of sunlight, they flower early and the female flower nodes are low. Winter melon has a well-developed root system and strong absorption capacity...
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What are the methods to prevent black-skinned winter melon from cracking?
What methods can prevent black-skinned winter melon from cracking? Which methods are the most effective? To prevent black-skinned winter melon from cracking, you can refer to the following methods: (1) Choose crack-resistant varieties; (2) In rainy areas or rainy seasons, use deep furrows with high beds or ridge-based trellis cultivation; (3) Apply more organic fertilizer to increase the soil's permeability and water-holding capacity, so that the soil supplies water evenly, promoting vigorous plant growth, and prune promptly so that the fruit develops normally;
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What are the control methods for zucchini fruit abortion?
How do you prevent and control fruit abortion in zucchini? What methods are truly effective? For zucchini fruit abortion, you can refer to the following methods for prevention and control: 1. Controlled cultivation. Keep the growing temperature for zucchini at around 25°C during the day and around 15°C at night, which favors the production, transport and accumulation of carbohydrates, and can greatly reduce fruit abortion....
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What are the control methods for rapeseed viral disease?
How to control rapeseed viral disease? Please advise. Rapeseed viral disease symptoms occur in all rapeseed production areas nationwide, with especially severe incidence in the winter rapeseed areas of North China, Southwest China, and Central China. The symptoms of this disease vary slightly depending on the type of rapeseed. Brassica rapa and Brassica juncea mainly develop chlorosis along both sides of the leaf veins, with leaves showing a yellow-green mosaic pattern, and the veins appearing translucent; in severe cases, the leaves shrink, curl, or become deformed, and diseased plants are markedly stunted, mostly dying before or at the bolting stage. Plants with mild infection and late onset may still bolt, but the flowering stems are curved or stunted, flowers and pods are densely packed, pods are shrunken and thin, and maturity is advanced. Brassica napus, by contrast, develops systemic necrotic spots, with symptoms appearing early and conspicuously on old leaves, then spreading to newly emerged leaves. At the initial stage of infection, needle-tip-sized transparent spots appear, which later expand into nearly round 2-4 mm yellow spots with dark brown necrotic centers, and the necrotic spots are surrounded by an oil-soaked appearance. On the stems and bolts, purplish-black spindle-shaped to elongated lesions appear, spreading from the middle-lower part toward the branches and fruit stalks; in the later stage, the stem lesions mostly split longitudinally or transversely, and the flowers and pods tend to wilt or die. The pods develop black necrotic spots and are mostly deformed.
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What are the key points of high-yield fertilization methods for rapeseed?
How should rapeseed be fertilized for high yield? Please introduce the following methods that can be referenced for fertilizing rapeseed: 1. Apply seedling fertilizer early. Seedling fertilizer should be applied appropriately early, and the application amount should account for 10%-15% of the total fertilization amount. Generally, apply 500 kg of decomposed human manure and urine per mu, plus 5-7 kg of urea or 10-15 kg of ammonium bicarbonate. When applying chemical fertilizer, it is best to dilute the fertilizer with clean water...
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How to fertilize rapeseed during the pod stage in Jiangxi? A detailed guide to practical methods
How to fertilize rapeseed during the pod stage in Jiangxi? Please guide and explain. The pod stage of rapeseed refers to the period from the start of flowering to maturity, including the flowering stage and the pod development stage. During the flowering stage there is only a small amount of vegetative growth, with reproductive growth being dominant. Proper field management during the flowering and pod-setting stage of rapeseed is the final key to achieving high yields....
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What are the symptoms of orchid round leaf spot? The prevention and control methods explained in one article
Leaf spot is a common leaf disease of orchids, found in Fujian, Jiangsu, Zhejiang, Shanghai, Nanjing and other places. Symptoms: The disease mainly affects the leaves. In the early stage, small brown spots appear on the leaves and rapidly expand into round patches, relatively wide, with a light brown center, and yellow small protrusions growing on both the front and back sides, occurring on the upper...
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How to fertilize orchids? Master the correct fertilizing method
Orchids belong to the family Orchidaceae and are monocotyledonous plants, perennial herbs. They reach 20-40 cm in height, with long tubular roots. The leaves grow in clusters from the base of the stem, linear-lanceolate, slightly leathery, 2 to 3 leaves forming a tuft. (1) The substrate is too wet or too dry. Growing orchids on a balcony is very different from growing them on the ground. Orchid pots on the ground are directly connected to the earth and can...
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How to improve the fruit set rate of persimmon trees? Sharing practical methods
How to improve the fruit set rate of persimmon trees? Please give an introduction to the methods. To improve the fruit set rate of persimmon trees, you can refer to the following methods: 1. Control the persimmon fruit borer. 7 to 8 days after the persimmon tree begins to bloom (based on 1 flower blooming in the persimmon orchard), you can choose 2.5% fenpropathrin 2500x solution, 21% fenvalerate 2500x solution, 10% duo...
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