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Control methods for stem-boring pests damaging cherry blossoms
The stem-boring pests that damage cherry blossoms include longhorn beetles and the coffee wood moth (Zeuzera coffeeae). Their control methods are: 1. Longhorn beetles. The longhorn beetles that damage cherry blossoms usually include the citrus longhorn beetle (Anoplophora chinensis), the glossy green longhorn beetle (Anoplophora glabripennis), and the peach red-necked longhorn beetle (Aromia bungii). ① Citrus longhorn beetle. One generation occurs per year. When adults emerge from late May to early June, capture the adults: before laying eggs, the citrus longhorn beetle adult first bites a notch about 2 mm deep and about 8 mm long in the bark in the shape of the Chinese character "eight" or "ding", then lays eggs inside it. During the peak egg-laying period in mid-to-late July, search for the notches on the trunk and crush the eggs.
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Harvesting, Grading, and Packaging Methods for Cut Lilies
(1) Harvest time - Cut flowers when the first flower bud at the base has fully swollen and colored (the true petal color is already visible). If a single flower stem has more than 10 buds, harvesting must wait until 3 buds have colored. (2) Harvesting method - Cut with a sharp knife 15 cm above the ground (about 5-6 leaves). If the flowers cannot be graded and bunched immediately after harvest, they must be placed in clean water and refrigerated within 30 minutes (to cool them and replenish water). (3) Grading and bunching - According to stem
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Detailed Explanation of Key Technical Points for Planting and Managing Cut Lily Flowers
① Time: It depends on the desired flowering period. In principle, it can be planted at any time of the year. However, it is best to avoid the hot summer season. When the temperature is relatively high, planting should be done in the evening, with artificial ventilation, shading, and cooling, etc., to ensure that the soil temperature is not too high, preferably with the soil temperature at a depth of 5 cm below 20°C. ② Planting method: open furrows and plant at points. In summer: first open furrows and plant the bulbs at points, then water and cover with soil; in winter: first open furrows, water, then plant at points, and cover with soil. ③ Density: generally 40 per sq m, varying according to variety
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Control Methods for the Ligustrum Looper Moth Damaging Ornamental Garden Trees
Distribution and Damage The ligustrum looper moth Naxa seriaria Motschulsky, also known as the lilac looper moth, belongs to the order Lepidoptera, family Geometridae. It is distributed throughout Northeast, North, Northwest, Southwest and East China. The larvae damage Syringa reticulata, Syringa pekinensis, Syringa reflexa, Syringa oblata, Syringa wolfii, Syringa oblata var. alba, ligustrum, large-leaved ligustrum, osmanthus, camellia, tea, privet, Manchurian ash and Chinese ash, etc. The larvae gather in groups to feed on leaves and often strip the leaves completely. The larvae have the habit of spinning silk to form webs; in severe cases the webs cover the tree crown,
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Detailed Explanation of Artificial Aging and Ancient-Styling Techniques for Bonsai Trunks
Everyone knows that creating a highly artistic trunk bonsai often takes years or even decades to accomplish. How can one create a trunk bonsai with both excellent form and spirit in a relatively short time? Practice has proven that this goal can be achieved through artificial aging and ancient-styling techniques. The technical measures are as follows: 1. Material selection: Every winter and early spring, one can go to barren mountain ridges, cliff tops and wind gaps, precipitous cliffs, and other places to select plant materials suitable for bonsai. Due to poor growing conditions in these places, trees are mostly low and deformed. They easily form
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What are the key technical points for tending and managing Korean pine (Pinus koraiensis) seedlings?
The tending and management of Korean pine (Pinus koraiensis) seedlings is as follows: the emergence period of Korean pine takes about 20 to 30 days. When the temperature is above 16°C, germination is most vigorous. Attention should be paid to watering to prevent drought, and to preventing damage from birds pecking. During the seedling stage, roots grow relatively fast; the main root can reach 10 cm long, accounting for about 40% of the annual growth, and can produce 4 to 5 lateral roots. However, the height growth of the seedlings is very small. Therefore, the resistance of the seedlings is very poor. Attention should be paid to watering to lower the temperature, preventing sunscald, and timely topdressing and loosening the soil and weeding. From the time Korean pine seedlings form terminal buds until the growth rate declines, it lasts about
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What are the methods for managing yew seedlings?
The methods for managing yew seedlings are: 1. Seedling overwintering management: seedlings are afraid of frost, so in winter they must be protected in an arched shed to keep them warm, and covering the plastic film with straw curtains is even better. 2. Seedling transplanting and hardening: after 1 year of cultivation, both seed-grown seedlings and cutting-grown seedlings should be transplanted for hardening; transplant the seedlings into open-field seedbeds at a spacing of 25 to 30 cm between plants and rows, build a 1.5 m high shade shed with six parts shade and four parts light, water frequently, and when the seedlings turn yellow, apply diluted urea water or light manure water as a top dressing to cultivate strong seedlings.
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Detailed Explanation of the Key Technical Points for Cultivating and Managing Spray Chrysanthemums
Chrysanthemums are one of China's ten traditional famous flowers. They can be grown in a wide range of regions, with many varieties, abundant flower colors, and changeable flower forms. They bloom proudly in the frost of late autumn when hundreds of flowers have withered, and they have high ornamental value. Potted spray chrysanthemums, in particular, are deeply loved by people because of their compact plant shape, neatly arranged flowers, and ability to display varietal characteristics. How to grow spray chrysanthemums well - technique is the key. 1. Potting soil preparation. How well chrysanthemums grow and how they bloom is closely related to potting soil preparation. Chrysanthemums dislike waterlogging and tolerate drought, like a certain amount of fertility, and cannot tolerate excessive fertility.
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Packaging Methods and Technical Points for Cut Chrysanthemums
When cut chrysanthemums are transported over short distances or in small quantities, they usually do not need packaging and can be sent directly to the flower market; however, for long-distance transport, especially cross-border export of cut flowers, packaging is essential. When cut chrysanthemums are transported over short distances or in small quantities, they usually do not need packaging and can be sent directly to the flower market; however, for long-distance transport, especially cross-border export of cut flowers, packaging is essential. The packaging of cut chrysanthemums follows the general principles of cut flower packaging: (1) protect the product from mechanical damage, and
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How to prevent and remedy the aging of rose plants?
Symptoms: It mainly harms flowers, leaves and young shoots. At first, water-soaked small spots appear on the petals, or the tips and edges of the petals turn brown, then rapidly expand, wilt and rot, and finally the whole flower turns brown and withers. Under humid conditions, a gray-green mold-like substance can be seen, namely the conidiophores and conidia of the pathogen. Disease characteristics...
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