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Although the whitefly is small, it is particularly harmful, and it has different degrees of harm to more than 600 kinds of plants such as vegetables, fruits, flowers and medicinal herbs. Whitefly is a worldwide pest problem, and whitefly are distributed in the north and south of China, which is very difficult to control. In the garden maintenance can be said to be a considerable problem, many friends engaged in agricultural planting will find that in the control of whitefly often just finished the medicine, a few days of plants, crops on the whitefly plants are full, very headache. The reason why whitefly has become a big problem in agricultural production, Inong believes that it is mainly because we usually have simple medication in the prevention and control of whitefly, or there is no continuous medication, or the use of drugs is not correct, so some whitefly that are resistant to the drug can not be killed, and after a few days, the whitefly recurs to continue to harm the plant.
This year, the climate in the northern region is dry, and the probability of whitefly hazard outbreaks has greatly increased, so we must do a good job of protection. So how to correctly control whitefly and solve this problem? Let's first understand the habits and harmful characteristics of whitefly, and then carry out targeted prevention and control, so that we can never lose a battle by knowing ourselves and knowing each other.
Whitefly is called the small white moth by our image, the life cycle has eggs, pupae, adult insects three stages, of which adults are harmful to crops, garden plants the culprit, it has a strong reproductive ability, a year can produce 10 generations. Whitefly are not tolerant of low temperatures, above 25 °C, below 32 °C is the most suitable for survival, adult insects have weak migration ability, prefer to live in groups on the back of plant leaves, and have yellowing. The harm of whitefly plants has two kinds of direct harm and indirect harm, first of all, whitefly survives by sucking the sap of crops and garden plants, which may lead to the death of garden plants and reduce crop yields after being sucked. Secondly, whitefly also has indirect harms such as spreading viruses and causing crop mold diseases.
Understanding the habits and hazard characteristics of whitefly, we can control it in a targeted manner, and then Yinong will briefly talk about how to control whitefly in agricultural production
First, pharmaceutical prevention and control: there are many drugs for the prevention and control of whiteflies, such as imidacloprid, mites, fumigation, etc., these agents can effectively prevent whiteflies. However, more attention should be paid to the use method, spray time and number of sprays, otherwise problems such as impure killing and drug resistance will always plague agricultural practitioners. Whitefly mostly inhabit the back of plant leaves, so it is necessary to spray evenly when spraying, focusing on the back of the leaves, and the weeds next to the crops should also be sprayed to prevent whitefly from hiding. The spray time should be in the afternoon when the wind is small and sunny, and the treatment should be used 2-3 times in a row. It should also be noted that cross-medication or mixed medication must be used to prevent whitefly from becoming resistant to a single agent.
Second, physical control: whitefly have yellowing, you can place yellow armyworm plates in the planting park, trap whitefly, the number of placed according to the pest situation to determine. Insect nets can also be placed to have a certain effect.
Third, biological control: for the agricultural production process to control whitefly, biological control is a good choice, whitefly has many natural enemies, can be released in the crop planting park its natural enemies to kill whiteflies. Like the common grasshopper, lily aphid wasp, etc. are good choices, one of the grasshoppers can kill nearly 200 whitefly, the effect is very good.
Fourth, robust plants: in the usual must do a good job of other maintenance work, timely removal of weeds, diseased leaves and dead branches, etc., control the temperature and humidity, timely supplement the fertilizer required by plants, cultivate robust plants, enhance their own insect resistance.
If you want to solve the difficulties and completely prevent and control whiteflies, the above four points should be comprehensively carried out, starting from many aspects, and comprehensive prevention and treatment can play the best effect. In this year's agricultural production, we must pay attention to the prevention and control of insect pests, so as to prevent the yield and quality of crops from being affected by pests and ensure the income of farmers and friends.
Detailed, welcome to discuss!