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What kind of pest is the Northeast giant black chafer?
〔Pest scientific name〕Holotrichia diomphalia Bates〔Damaged crops〕It damages sugar beets and various vegetables, and also damages legume and grass-family crops.〔Pest identification〕The larvae cause damage by biting through the roots and stems of vegetable seedlings, causing the whole plant to wither and die, resulting in missing plants and broken rows; they also gnaw on root tubers and stem tubers, affecting quality. The adults feed on crop leaves, especially preferring crops such as soybean and peanut, leaving holes or notches. The Northeast giant black chafer belongs to Coleoptera, Scarabaeidae.
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Occurrence Patterns and Control Methods of Black Spot Disease in Impatiens
Black spot disease of Impatiens is an important disease in the production and cultivation of Impatiens. It occurs commonly in our country and causes serious damage, so it should be taken seriously. Symptoms: The disease damages leaves, especially the older leaves in the middle and lower parts, which are susceptible to infection. Affected leaves develop circular or oval spots that are dark brown, 2-10 mm in diameter, with inconspicuous concentric rings and darker edges. When the disease is severe, the spots can expand and merge into patches, and on the spots appear pale green or olive-black mold-like growth, which is the pathogen's conidiophores and conidia. This causes the diseased leaves to shrivel and die.
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What is the black peach? Introducing the black peach, a rare delicacy among peaches
The black peach, also known as the Black Peach Queen, originated in North America and adapts well to cultivation in both northern and southern China. It is the special peach variety with the greatest development value in China in recent years. This variety has a small tree form, many branches, few extended shoots, strong sprouting ability, and enters the fruiting stage early, bearing fruit mainly on medium fruit branches. It blooms in March, has a long flowering period, and its flowers are redder than ordinary peach blossoms, giving it a certain ornamental value. The fruit grows slowly from June to July, swells in August, and ripens in early September. Its appearance resembles that of an ordinary peach, and the fruit is relatively large, generally weighing 120-160 grams, with the largest
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Detailed Processing Method for Sweet Potato and Black Bean Paste
I. Raw Material Formula. Sweet potato 45 kg, black beans 15 kg, white granulated sugar 20 kg, vegetable oil 1.5 kg, caramel coloring 0.2 kg, sufficient water. II. Processing Key Points 1. Treatment of Raw and Auxiliary Materials: Select fresh or winter-stored sweet potatoes, requiring no mildew or rot, no deterioration, no pests or diseases, and no sprouts. Remove both ends, wash clean of sand and set aside; black beans should be free of mold, borers, and sand grains. After washing with clean water, soak in warm water for 3-4 hours; dissolve sugar in purified water and filter to make a 75% sugar solution; separately dissolve caramel coloring in an appropriate amount of water, add vegetable oil and stir evenly into an emulsion, set aside.
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What kind of tree species is the twice-blooming black locust (Robinia pseudoacacia 'Decaisneana')?
The twice-blooming black locust is a rare landscaping tree species, a tree. It was introduced to Henan from the Netherlands in 1996. It grows and develops normally in Henan. Its rarity lies in that it blooms twice a year: the first bloom occurs around May 1, and the second bloom occurs around July 10. The flowers are large and pink, with a flower length of 3.7 cm, and each blooming period lasts about 15 days. The young leaves are yellow with a hint of red, and at the end of growth the seedling stem turns reddish-brown. A one-year-old seedling grows about 3 m tall, making it an excellent street tree and garden landscaping tree species.
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Red-flowered black locust
Red-flowered black locust, also known as bristly locust and Jiangnan locust, is a variety of black locust (Robinia pseudoacacia) in the genus Robinia of the Fabaceae family. Because its stems, twigs and flower stalks all bear red bristles, it is named "bristly locust". It has abundant flowers and brilliant colors, and can be planted in groups or as a single specimen for garden landscaping. The leaves of the red-flowered black locust are very similar to those of the black locust: odd-pinnate compound leaves, with opposite leaflets, 7 to 13 in number, elliptical. The papilionaceous corolla is pink or purplish-red, with 2 to 7 flowers forming a sparse raceme. The flowers are sterile, and the pods mostly do not develop, generally producing no seeds, so it is difficult to propagate by seed; black locust is mostly used as rootstock
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Detailed Explanation of the Winter Trunk-Cutting Planting Method for Black Locust
Planting black locust by trunk cutting in late autumn and early winter has several major advantages: First, it avoids the spring tree-planting peak and the busy farming season, making full use of the winter slack period, so that planting time and quality are fully guaranteed. Second, according to the physiological characteristics of black locust, the average daily temperature required for root growth is relatively low; after leaf fall in autumn the above-ground part stops growing while the underground part continues to grow for a period, and when the leaves fall the mobile nutrients in the branches and leaves return to the trunk and roots, at which time the roots are rich in stored nutrients, which precisely gives the root system a stage for growth. Third, the plots where black locust is planted are generally
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Black locust is a commonly used landscaping tree species
Black locust, also called false acacia, belongs to the genus Robinia in the Fabaceae family. Native to North America, it has spread throughout vast areas of North China, Northwest China, and the southern part of Northeast China. The black locust has a tall crown and bright green leaves; when it blooms, the green and white complement each other, elegant and fragrant. It can be used as a street tree or shade tree. It is a pioneer tree species for greening industrial and mining areas and for greening barren hills and wastelands. Black locust wood is hard and resistant to water and moisture. It can be used for mine props, railway sleepers, vehicles, and agricultural timber; the leaves contain crude protein and are good feed for many livestock; the flowers are an excellent nectar source plant, and black locust honey is white and transparent, deeply welcomed by consumers
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How to grow black locust seedlings? Detailed explanation of the seedling-raising techniques for the landscaping tree black locust
Black locust, also known as false acacia, is relatively drought-tolerant and can grow normally on dry sunny slopes and sandy land in North China and Northwest China. It is a good tree species in North China and Northwest China for timber, soil and water conservation, windbreak and sand fixation, and "four-side" greening. The seedling-raising techniques for black locust are introduced here: black locust is generally propagated from seed. 1. Seed treatment. Black locust seeds contain varying numbers of hard seeds, which should be treated by gradually increasing the temperature and soaking the seeds multiple times, that is, first soak the seeds in 60°C water, let them cool naturally, leave them for 24 hours, then remove the swollen seeds; for the unswollen
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Technical approach for mixed planting of strip mulberry and black locust in the conversion of cropland to forest on the plains
The technical approach for mixed planting of strip mulberry and black locust in the conversion of cropland to forest on the plains is: create an ecological forest through mixed planting of trees and shrubs, achieve a scientific and rational configuration of tree species, increase tree species diversity, focus on windbreak and sand fixation, use mulberry leaves for sericulture, and use mulberry twigs for weaving or papermaking; if fruit mulberry is planted, the mulberries can be eaten fresh or used to brew juice, which can achieve relatively high economic and social benefits.
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