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Identification and Control Methods for the Russian Wheat Aphid
Scientific name Diuraphis noxia (Mordvilko), order Homoptera, family Aphididae. Synonym Brachycolus noxius. Also known as the Russian wheat aphid. Distribution in **. In addition, the Liaohe, Yellow River, Huaihe and Haihe river basins are all suitable areas for this insect. Abroad it is mainly distributed in Ukraine, Central Asia, North Africa, Eastern Europe, Nepal, South Africa, Mexico, the United States and Canada. It is a worldwide major pest of wheat. It is a domestic quarantine target. Hosts: wheat, barley, rye, oats, wild oats, brome
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Methods to control excessive growth and promote sturdy wheat seedlings: these technical points must be mastered
When wheat seedlings grow excessively before winter, their growth period advances, nutrient accumulation decreases, and cold resistance drops, which is not conducive to safe overwintering. They can be managed by category according to the cause of excessive growth to control vigorous growth and promote sturdiness. 1. Vigorous seedlings formed by too-early sowing: the seedling leaves are slender, tillering is insufficient, and the main stem and some large tillers enter the double-ridge stage before winter. Such wheat seedlings are often vigorous early and weak later, and will be frostbitten in winter when exposed to a low temperature of minus 10°C lasting 5 hours. They should be pressed in a timely manner to inhibit the growth of the main stem and large tillers of the wheat seedlings and control spindly growth. Pressing should be done on a sunny morning; it must not be done when there is frost or dew
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Practical methods for raising water temperature when growing rice with well water
The biggest drawback of growing rice with well water is the low water temperature, which affects the good growth and development of rice, leading to reduced yield and poor quality. Therefore, raising the water temperature when growing rice with well water is crucial. The specific technical measures are: 1. Set up a solar warming pond to raise the water temperature. Adding a solar warming pond is an effective measure to raise the water temperature when growing rice with well water. The area of the solar warming pond should be based on actual conditions and adapted to local circumstances. Generally, the area of the solar warming pond should be 1500-2000 sq m, preferably reaching about 1/20 of the irrigation area of the pump. According to experimental research, 2
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What are the control methods for seed-borne diseases of the three wheats?
The main seed-borne diseases of the "three wheats" are stripe disease, smut, and net blotch. To control these diseases, in addition to measures such as selecting disease-resistant varieties, crop rotation, and adjusting sowing dates, the key is to do a good job of seed treatment. Seed treatment can use the following methods: (1) Use 12.5 milliliters of 10% seed soaking agent, add 4 kg of water, and mix with 50 kg of seeds; or use 100 grams of 2% Silvacur, add 4 kg of water, and mix with 100 kg of seeds, which can control stripe disease and smut. (2) Use 150 grams of 2% Silvacur, add
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Identification and Control Methods of the Greenbug
Scientific name Schizaphis graminum (Rondani), order Homoptera, family Aphididae. Distributed throughout the country. Hosts include wheat, barley, oats, sorghum, rice, foxtail grass, sedge and other grasses. Damage characteristics: The greenbug often feeds on sap on both the front and back of wheat leaves or inside and outside the basal leaf sheaths, causing wheat seedlings to turn yellow and wither or to lie flat and be unable to joint, and severely affected wheat plants cannot head normally, directly affecting yield; in addition, it can also transmit wheat yellow dwarf virus. Morphology
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Methods and Techniques for Rational Utilization of the Three Wheat Feeds
Wheat bran, wheat chaff and wheat straw are collectively known as the three wheat feeds, and they are important feeds in the main wheat-producing areas. Rational utilization of the three wheat feeds can promote the development of the livestock industry. If used improperly, they will not only fail to produce the desired effect, but will also cause livestock and poultry to contract certain diseases, resulting in economic losses. Wheat bran belongs to the high-phosphorus, low-calcium feed category, and the ratio of phosphorus to calcium it contains is 4:1, which is the opposite of the physiological calcium-to-phosphorus ratio required by livestock and poultry, which is 1.5:1 to 2:1. Feeding too much wheat bran can cause calcium deficiency disease due to an imbalanced calcium-to-phosphorus ratio, such as rickets in young animals, osteomalacia in adult animals
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A Complete Guide to Onion Thrips Damage and Control Methods
I. Distribution and Damage. Onion thrips, also known as tobacco thrips, cotton thrips, etc., belongs to the order Thysanoptera, family Thripidae. It mainly damages onions, scallions, garlic, Chinese chives, cucurbits, eggplant, Chinese cabbage, potatoes, and so on. Both adults and nymphs use their piercing-sucking mouthparts to suck the sap from tender tips and heart leaves of plants. Damaged scallions develop many fine, elongated grayish-white spots, the leaf tips turn yellow and dry up, and in severe cases the leaves become twisted and withered. II. Morphological Characteristics. Adult. Body length 1-1.3 mm, light yellow to dark brown, etc. Wings slender and transparent,
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Key Cultivation Techniques and Planting Management Methods for Leeks
Leeks, also known as foreign garlic, scallion-garlic, flat-leaf onion, foreign garlic sprouts, etc., are cold-resistant and heat-tolerant, and can be cultivated in both sandy and clay soils, but fertile, heat-retaining clay loam rich in organic matter is most suitable. I. Sowing and seedling raising: spring sowing is done in March-April, autumn sowing in July, with a sowing rate of about 2.5 kg per mu, enough to transplant 16 mu of field. After leveling the seedbed, water it, and once the water has seeped in, scatter the seed and cover with 1 cm of soil. When the seedlings are 5-6 cm tall, thin them 1-2 times. When the seedlings are 50-60 days old, they can be transplanted into the field.
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Lycoris radiata has high ornamental value, and its cultivation methods require attention
[Aliases] Cockroach flower, crow garlic. [Family and genus] Amaryllidaceae, Lycoris. [Morphology] Perennial herbaceous plant, with thick underground bulbs, broadly oval, covered with a purplish-red membrane. Leaves linear, emerging from the base after the flowering period, 5-6 leaves, leaves emerge in winter and wither in summer. Flower scape emerges from August to September, 30-60 cm tall, bearing 4-12 flowers in a terminal umbel; flowers bright red, the tube very short, about 5-6 mm long, lobes narrowly obovate-lanceolate, curling outward. Ova
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Key Points of Cultivation Techniques and Detailed Management Methods for Bolt Garlic
I. Land preparation and fertilization: Bolt garlic is suitable for planting in loose, fertile soil. When preparing the land, plow deep and harrow fine. Apply 4000-5000 kg of fully decomposed barnyard manure, 50 kg of diammonium phosphate, 30 kg of potassium sulfate, 3 kg of iron fertilizer, 2 kg of zinc fertilizer and 2 kg of boron fertilizer per 667 sq m (1 mu). Apply them together with the plowing and turning of the land. II. Variety selection: Choose Cangshan garlic, which is dual-purpose for bolts and bulbs, vigorous in growth, highly adaptable, cold-resistant, high-yielding and good in commercial quality, as the cultivar. Select cloves that are large, white, sterile and undamaged
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