Standard pesticide spraying techniques to effectively improve pesticide utilization
Pesticides are just as important as agricultural resources, and can effectively protect the output of agricultural products in agricultural production. However, do you really understand the pesticide spraying techniques?
First, fight drugs
1, reduce the source of pests
Cleaning the diseased leaves, diseased branches, diseased fruits and even diseased plants (the source of infection for most diseases), they are brought out of the open-air incineration treatment and the effect of the drug is naturally better.
2, choose to play time
(1) According to the temperature change to determine
Whether plant, pest or bacteria, they have a suitable activity temperature, about 20-30 ℃, 25 ℃ is best, then fight drugs, not only for crops is safe, in the active phase of the disease will have Cordyceps effect.
Hot weather, it should be 10 o'clock in the morning, after 4 pm fight drugs;
Cool weather, it should be after 10 o'clock in the afternoon, before 2 pm fight drugs;
Winter and winter greenhouses, it is best to fight the weather in sunny weather.
(2) According to the change of humidity to determine
Liquid from the deposition on the pests and diseases to expand the uniform membrane will be affected in many ways, the impact of air humidity is great.
Air humidity is too large, the deposition of the liquid will become larger droplets, again under the influence of gravity, it will be deposited to the lower plant, resulting in phytotoxicity;
When the humidity in the air is too low, the liquid evaporates easily, which leads to the decrease of the medicine which can reach the target, so as to reduce the effect of the medicine and seriously cause the burning of the medicine. Therefore, to fight the drug environment to maintain ventilation.
Open-field vegetables, you can properly trim some of the leaves and branches of plants to keep the field ventilation.
Greenhouses, vegetables, if the morning fight drugs, then choose to expose the shed after a period of wind, if the afternoon fight drugs, then choose half an hour before the wind or an hour before the fight drugs.
(3) According to the characteristics of pests and diseases to determine
Such as the prevention and treatment of whiteflies (fly on a touch), in the morning when the dew is dry to fight drugs; prevention and treatment of flower thrips, blooming in the morning when the fight drugs; leaf thrips prevention and treatment in the evening or at night and so on.
Such as the prevention and treatment of diseases, in the rain before the rain, before watering, before cloudy, early onset of such as drug fight (because many diseases rely mainly on water, wind and rain to spread, this time do not fight drugs, ill and cry too late).
3, the election of pesticides
If the disease prevention, the first symptomatic and then medication, know what disease with what medicine, chaos medication, identify fungal diseases and bacterial diseases medication different; followed by rotation medication, do not blindly use the same agent.
If the pest control, we must first insecticide, taking into account kill adult eggs, kill eggs, kill larvae or nymphs, thereby reducing the source of insects; secondly to change medication, do not blindly use the same agent to prevent pest resistance, reduce efficacy .
4, diluted pesticide should be appropriate
Medication diluted according to the instructions to use, depending on the degree of severity of pests and diseases can be a slight increase, but not recommended to double use.
If you think the efficacy is not good, on the one hand you can rotate the pesticide of another mechanism of action, on the other hand can optimize their own fight drug technology.
5, mixed with pesticides to be reasonable
Early disease, the protective fungicide absorption of therapeutic bactericides.
In insecticide, you can choose to kill the role of eggs and the role of adult insecticides to kill and other mixed.
Note: The same ingredients to avoid mixing drugs, copper formulations to avoid mixing with alkaline pesticides, etc., to prevent phytotoxicity!
Second, fight drugs
6, master a good way to fight drugs
For pests that like to be harmed in a certain part of the plant, it is important to fight this part of the fight (such as leaf back, fruit, flowers, stem base, etc.).
7, grasp the distance and speed playing drugs
Such as knapsack electric sprayer nozzle to keep with the target about 30-50 cm;
Motorized spray is maintained at about 1 meter.
Slowly when people fight drug liquid medicine easily contiguous, go faster in some parts will not hit the drug, so to grasp the speed of walking, find suitable routines.
8, adjust the droplet size
According to the performance of the sprayer and its nozzle, adjust the size of a suitable drop.
Greenhouse vegetables in the prevention and treatment of diseases and aphids, whitefly and other small pests, the choice of smoke machine;
Open field vegetables pest control, we must choose to spray the larger droplet sprayer.
Third, fight medicine
9, pay close attention to pest development
In the fight a day or two, we must promptly inspect the degree of pest control in the ground, in order to determine whether you need to re-fight a drug, what medicine to fight.
Special attention: rain before the rain to do a good job of vegetable protection measures, and timely drainage, pay attention to fighting drugs (protection treatment), timely removal of diseased plant debris to reduce the source of infection!