According to the medicinal part, we classify traditional Chinese medicine as Chinese Medicinal Herbs Rattan Wood. Most rattans differ from other palms in having slender stems, 2–5 cm diameter, with long internodes between the leaves; also, they are not trees but are vine-like lianas, scrambling through and over other vegetation. Some rattam wood have abundant medicinal value, we develop them and apply to herbal medicine area.Such as SPATHOLOBI CAULIS or SPATHOLOBI CAULIS
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1. Varieties of wheat with loosely arranged wheat ears, short awns, and loose husks with a short flowering and long flowering period are conducive to adult oviposition and larval invasion and poor insect resistance, such as: Zhongmai 16, Beinong 9 and 8866; , strong insect resistance, such as 71-3, 7117-2, Beijing 9428.
2. Climatic conditions Temperature is important for midge, but the most important is rain and soil moisture. In general, the soil moisture content is less than 15%, and the adults rarely emerge. The soil moisture content reaches 22% to 25%, and a large number of adults occur. Therefore, from March to April, the jointing stage of boot wheat is wet and rainy, the soil is moist, and the larvae are easy to break. The emergence of eclosion occurs more often in the year. In addition, from the end of the 1990s to the present, due to the improvement of the water source conditions and the continuous improvement of the planting level, the breeding of wheat midge is accelerated.
3, Prevention and control of wheat midge dormancy for a long period of time, can not eat or drink in the soil can survive 6 to 12 years, due to small individuals, larvae hiding hidden in the ears damage, not easy to be found, and thus could not catch control The period has led to an increase in successive years.
Prevention
1. Selection of insect-resistant varieties
2. The wheat fields in deep-season wheat crops and crops such as rapeseed, beans, cotton, and paddy crops have been turned down. The number of insect populations can be significantly reduced.
3. The chemical prevention and control technology adopts a three-step prevention and control method and has a good control effect. (1) Soil poisoning and control of soil larvae before wheat sowing. Soil treatment before sowing, mu 50% phoxim EC 200 ml, water 5 kg, sprayed on 20 kg dry soil, mix well made of toxic soil, spread the surface, into the surface. 2 The control of larvae and pupae is the key period for the prevention and control of larvae and pupae. When the soil temperature is 15°C, the midge migrates to the surface of the soil and begins to metamorphosed. The resistance is weak. It can use 50% phoxim EC as 150 ml. According to the method, it is made of toxic soil, and it is spread evenly on the ground after the evening, Poison soil mixed into the topsoil. 3 wheat heading and flowering control adult. The soil temperature at the time of heading wheat is 20°C, and the adult eclosion or fly to the ear spawns. The insecticides such as fast killing spirit and Huifeng crack are used 1000 to 1500 times, or kung fu and high efficient hydropermethrin etc. 2000 ～3000 times liquid spray control.
Author: Renqiu Agricultural Bureau Plant Protection Station, Hebei Province
The occurrence and development of wheat midge are related to such factors as wheat varieties, climatic conditions, farming systems, and natural enemies, among which wheat varieties, climatic conditions, and appropriate control period are most closely related.