The pests are in full bloom. For pests, the period of pest growth can be the period of egg hatching, the period of larval growth and the period of adult growth. The period of application of the pest depends on the specific situation. In principle, it is necessary to grasp the living habits of pests, and to carry out the stage where the most harmful insects are easily killed and the damage can be effectively controlled. It should generally be applied at a young age before the pests are 3 years old, and at this time, they can get twice the result with half the effort. The reason is:
1. Younger pests are thin at the 3rd instar body wall, and there are many hairy hairs on the body wall. The epidermis of the micro hairy part is very thin, and the medicine is easy to pass through this layer, and at this time, the insects Small body, small amount of food, light hazard, small range of activity, weak drug resistance, so determine the appropriate period of prevention and treatment, should be mastered before 3 years of application, can achieve the best control effect. When the pests reach 4-6 years old, the pest food and body wall thickness are greatly increased, the thickness can reach 50-100 times of the 1st instar larvae, and the micro-hairs on the body wall are also absent, so the agent is not easy to adhere to the body. It is more difficult to reach the pests on the wall and through the body wall, which greatly affects the insecticidal effect.
2. After the age of the pest increases, the amount of fat in the insect body also increases, and it has the function of accumulating and decomposing many pesticides. The higher the body fat content of the pest, the more obvious this effect and the stronger the drug resistance.
Natural enemy sensitive period. In the period when the natural enemies of the pests are sensitive to the chemical reaction, the medicine should be used as little as possible or not, so as to protect the natural enemies and maintain the ecological balance in the field.
Susceptible growth period. For diseases, the growth period of susceptible diseases is a suitable period of prevention and treatment. If the seedling stage is most susceptible to bacterial blight, it can be seeded with fungicide before spraying or sprayed at the seedling stage.
Weed sensitive period. The application of herbicides should generally be controlled during the sensitive period of weeds. For weeds that are propagated by seeds, seedlings and young shoots are more sensitive to herbicides. Therefore, this period is often the time to control weeds. When a broad-spectrum herbicide is used, such as glyphosate, gram-free, etc., the growth of weeds is more sensitive. If it is to prevent spring grass and summer grass, it is best to spray it at the beginning of weeds.
The rodent has a fasting period. In terms of effectively controlling the density of the rodent, the release of the bait should be better at the rodent fasting stage. Years of experiments have shown that the best effect of rodent control in spring is due to the depletion of the winter stocks of the rodents and the corresponding intake of poison baits.
Plant safety period. The safety of the agent to the plant is a prerequisite for determining the duration of the application. For example, when 2,4-d butyl ester is applied after the jointing stage of winter wheat, it is easy to make wheat not strong. Therefore, it is advisable to apply it before the end of the winter wheat tillage period. Therefore, when applying pesticides, it is necessary to select the period during which the crop has strong resistance to the medicament, so as to avoid causing crop damage.
Safety interval. During the application period of pesticides, it should also be applied according to the safe use standards of pesticides during the safety interval to avoid excessive pesticide residues and cause adverse consequences.
Chicken Wire is also named poultry netting or Hexagonal Wire Netting. It is commonly used to Fence poultry livestock.
According to the materials, Chicken Wire Mesh comes in four types: galvanized wire chicken mesh, stainless steel wire netting, PVC coated green wire netting and brass chicken fence.
Material: Low carbon wire, electro galvanized wire, hot dipped galvanized wire, PVC coated wire and stainless steel wire
Mesh wire:0.4-3.5mm
Mesh size:1/2", 3/4", 3/8", 5/8", 1", 1-1/4", 1-1/2", 2", 3", 4"
Twist style: Normal twist and reverse twist
Technique: Gal. after weaving and gal. before weaving
Classification:
1) Hot dipped galvanized hexagonal mesh(Hot dipped galvanizing after weaving or before weaving)
2) Electro galvanized hexagonal mesh(Hot dipped galvanizing after weaving or before weaving)
3) PVC coated hexagonal mesh
4) Stainless steel hexagonal mesh
Chicken Wire
Chicken Wire Mesh,Galvanized Chicken Wire,Vinyl Coated Chicken Wire
Anping Enzar Metal Products Co.,Ltd. , http://www.enzarmetal.com