How to use pesticides before apple bagging
After the apples fall from flowering to the use of pesticides before bagging, in addition to mastering the following principles, remind farmers to pay attention to three points: First, when using fungicides , pay attention to the protection of fungicides and systemic fungicides. Use or mix, especially the last time before bagging, be sure to add high quality systemic fungicide. After the medicine is used, the medicine solution is dried and then bagged. Generally, the bagging starts within 2 days after spraying, and the bagging ends within one week. The second is to pay attention to the selection of high-quality, breathable fruit bags to ensure the effect of bagging and control the occurrence of pests and diseases in the bag. The third is to pay attention to the prevention and control of pests and diseases before apple bagging, to prevent fruit from carrying insects into the bag, and to pay attention to the prevention and control of pests and diseases in the leaves and branches of the bagging, to protect the growth of fruit trees, and to bring you a bumper harvest. joy.
1. Timely medication First, according to the characteristics of pests and diseases, such as the golden moth, the heartworm and other drillworms should be used in the adult stage, egg stage and larva hatching before the leaves and fruits have been drilled; the scale insects should be secreted. The wax layer is administered prior to forming the shell. The second is to use the drug according to the performance of the drug. For example, the late-acting pesticides such as chlorfenapyr and BT should be applied for 3-5 days in advance to maximize the effect of the drug; the protective fungicide should be applied before the infection of the bacteria, and the systemic fungicide should be applied at the beginning of the disease. medicine.
2, rational selection of drugs First, choose high-efficiency, low-toxic, low-residue pollution-free pesticides; Second, choose biological agents, such as microbial pesticides , antibiotics, pesticides, etc.; Third, try to use selective and selective pesticides, less Use broad-spectrum pesticides to protect natural enemies and beneficial organisms; Fourth, use pesticides or imported pesticides produced by domestic pesticide manufacturers, and try not to use "new drugs." Most of the so-called new drugs are refurbishment of old drugs. Although the name is good and the packaging is good, the price is more expensive and the use is not affordable. Fifth, we must choose a drug with a good active ingredient content.
3. Safe medication mainly includes the safety of humans, animals, fruit trees, fruits and natural enemies. For the young fruit period before bagging, use pesticides such as dry suspension, water-dispersible granules, water-floating agent, microemulsion or wettable powder for safe young fruit. Do not use organic phosphorus or pyrethroids. Insecticides and fungicides containing sulfur, thiram and copper, so as not to cause fruit rust and kill natural enemies.
4. Accurate use of drugs should be strictly in accordance with the dosage and concentration of pesticides used on the pesticide label. Second, the correct application method should be selected, such as fumigation or injection to control dried pests such as beetles and geyser; The quality of the drug. Maintain a balanced pressure when spraying the liquid. The spray head is more than 0.5 m away from the fruit tree leaves to ensure the atomization effect. The spray should be even and thoughtful. From top to bottom, from the inside to the outside, the front and back sides of the blade should be sprayed with the liquid medicine. It should not be leaked or sprayed. It is better to wet the leaves and not form flowing water droplets.
What is rock wool Sandwich Panel? what is it used for?
The practicability of the rock wool sandwich panel is good, and it has a wide range of applications. Many buildings use this type of panel. But many people don't know much about its materials and uses, so let's introduce it in detail below.
making raw materials
The raw materials of rock wool sandwich panels are generally high-quality basalt, dolomite, etc., mixed according to a certain proportion, melted in a high-temperature blast furnace, and then made into fibers. After cooling, a certain amount of binder is added for rolling, so that the sandwich panel we use every day can be formed. Cutting of different sizes and specifications can be carried out, and the size and specifications of sandwich panels can also be customized.
Application range
In fact, rock wool sandwich panel are not only suitable for daily use in some buildings such as Steel Structure Warehouse, roofs and walls of Prefabricated House, but also can be used for more than 100 yuan, and can be used for soilless cultivation, and its annual use area is wide , City Volunteer Bank is indeed very good. Because it shows a slightly alkaline reaction in the initial stage, it is necessary to pay attention to the pH value when using the nutrient solution. After a period of use, the response will be neutral. Horticultural applications can be carried out according to daily application conditions, as well as water holding capacity, water tension, etc.
Advantages
The building construction industry uses this kind of sandwich panel mainly because of its excellent performance. It has very good fireproof performance, thermal insulation effect, and also has a certain sound absorption effect, so it is very suitable for use as a building material. Moreover, its rigidity is good and its strength is very good, and there will be no problems such as deformation and cracking, and it is also very suitable for long-term use.
Now many manufacturers can provide customized rock wool sandwich panel services. We only need to clarify our needs, choose the appropriate sandwich panel size and specifications, etc., and make an appointment for customization immediately. Moreover, the price of factory direct sales is favorable, the price is high, and it can also provide various services such as transportation and after-sales. It is also guaranteed to choose a reliable manufacturer to cooperate in ordering sandwich panels.
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Henan Jinming Metal Material Co., Ltd. , https://www.jinminghouse.com