Basic principles of pest control in tea gardens
Tea tree is a perennial shrub-type crop, with dense tree crowns, large tree widths, and evergreen seasons. Once planted, it can be continuously produced for several decades or even hundreds of years. Under the current cultivation and management conditions, newly planted tea gardens can be closed in a few years to form a special eco-environment with dense crowns and closed canopies, and with small changes in the microclimate, and they are relatively stable, making the bio-community structure (including pests) in the tea gardens. And beneficial organisms are more complex than other ecosystems, and biological species and numbers are much more abundant. They are also relatively stable during the year. Although the number of species of different species is slightly ups and downs, it can maintain a relative balance over a relatively long period of time. At the same time, the tea garden is also a secondary ecological system with large human disturbance. From the land reclamation, tea planting to tea tree pruning, picking, fertilization, pest control, etc., all are disturbed by human factors. In recent decades, due to changes in the ecological environment and changes in cultivation practices, the ecological environment of the tea gardens has become simplistic and conducive to the spread and spread of certain diseases and insect pests. The widespread use of chemical fertilizers has caused the tea gardens to suffer from land degradation and decreased soil activity. In particular, a large amount of partial application of nitrogen fertilizers changed the ratio of carbon and nitrogen in the tea tree and caused an outbreak of sucking insect pests. In the pest control of tea gardens, attention is paid only to pests and diseases and measures to ignore prevention have resulted in damage to the ecological balance of the tea garden and it is not easy to recover. This has caused dramatic changes in the pests and diseases in the tea gardens. The dangerous pests are constantly occurring and are increasingly serious. The three "R" issues (residual Residue, Resistance, and Resurgence) have become increasingly prominent. At the same time, tea leaves are used as objects, pesticides are directly sprayed on the harvested shoots, and the picking batches are frequent. In the production season, 5-7 days, one round can be picked, and the collected shoots can be processed without any washing. Tea drinking. Therefore, maintaining a good ecological environment in tea plantations, reducing the use of pesticides or even not using chemical pesticides is the key to prevention and control of pests in tea plants. There are 820 types of tea pests and diseases recorded in China. Diseases and insect pests cause about 15% yield loss in tea production each year, and losses are greater in local areas and local years. The particularity of the tea garden ecology makes the environment of insects relatively stable. Due to the complexity of the food web and the limited feedback mechanism within and between insect populations, the number of single species is stable. That is to say, dominant populations can often maintain their advantages stably and remain in economic status. The more prominent. In other words, although there are many pests in tea gardens, only one, two or two or three key pests usually have important economic significance. Therefore, the success or failure of pest control throughout the tea garden often depends on the prevention and control of key pests. Critical pests are not necessarily the most numerous species. Such as tea bifurcation, its occurrence is often much more than the tea-footworm, but the resistance of the tea tree to the damage of aphids is strong, and the locust is often constrained by natural enemies, picking and other factors, although its quantity is many, but it does not cause Serious economic losses have become critical pests. In addition, pests in tea gardens in different regions are different because of their different agro-ecosystems, and the economic losses incurred are not the same. Even different plots of tea plantations in the same region are different. Therefore, it is very necessary to determine the key pests in the ecological regulation of tea plant pests. As the key pests, they have the following characteristics: 1The harm period of pests is synchronized with the sensitive damage period of the harvested parts of the host crops, and the damage to the host crops exceeds the host's compensation ability and tolerance limit; the 3 groups of regular activities are within the level of economic loss. Up or down, or completely over. The principle of ecological regulation of pests in tea gardens is based on the understanding of the special ecological environment of tea plantations, and based on the basic principles of ecology, starting from the pests, natural enemies, tea trees and other organisms and the surrounding environment as a whole, to fully investigate and master the tea garden ecosystem and Under the premise of the bio-community structure of the surrounding environment, the relationship between various biological and non-biological factors is studied; the law of occurrence and growth of various beneficial and harmful biological populations and their relationships are grasped; comprehensive consideration is given to the control effects and interconnections of various measures In response to the chain reaction and its influence on the growth and development of tea plants, the natural control function based on the tea plantation environment was taken full advantage of tea plantation. Iron Dextran Injection INDICAITON Iron Dextran Injection Iron Dextran Injection,Iron Supplements,Iron Medicine,Iron Injection Hebei Kexing Pharmaceutical Co., Ltd. , https://www.kexingpharma.com
Use in animals, primarily young animals pigs, horses, calves, furbearer, for treatment and prevention of iron-deficiency anemia.
DOSAGE AND ADMINISTRATION
For intramuscular injection
Foals and calves: 200-600mg Fe per animal which is equivalent to 2ml-6ml of the product per animal.
Piglets: 100-200mg Fe per animal which is equivalent to 1ml-2ml of the product per animal.
Puppies: 20-200mg Fe per animal which is equivalent to 0.2ml-2ml of the product per animal.
Fox: 50-200mg Fe per animal which is equivalent to 0.5ml-2ml of the product per animal.
Mink: 30-100mg Fe per animal which is equivalent to 0.3ml-1ml of the product per animal.