There is no need to worry about vegetables encountering red spiders, try these methods, it is better than using drugs
They rely on strong suction to rampage through the vegetable field, and once they enter the no-man's land, the leaves will become yellow, become thin, and in severe cases, they will completely lose their vitality, losing one to fifty percent.
In particular, the influence of human factors makes the control of spiders more difficult, improper abuse, improper use, and non-standard medication, which produces stronger resistance to spiders, and shows that the more controlled, the less obvious the spraying effect.
In order to effectively control the harm of tomato spotted diver and solve the existing problems in the control of tomato spotted diver, a method for controlling spotted diver was proposed.
Fighting disease.
In addition to natural factors, there are also human factors, among which the lack of awareness of farmers and improper use of drugs are caused by them.
They know too little about the world. There are differences in farmers' perception of pests, with some people mistakenly believing that red fire ants are small and less harmful and do not need to bother to eradicate them.
It is precisely because it did not receive enough attention in the early stage and did not establish the necessary monitoring system that gave the spider mites the opportunity to reproduce in large numbers, and when its damage expanded to a certain extent, it would become powerless to recover.
Substance abuse. In terms of pesticide screening, the types of pesticides are not innovative enough, and the long-term use of a single insecticide has led to a higher resistance of pests in the region to insecticides, which increases the difficulty of control.
In addition, due to the abuse of a large number of pesticides, the ecological conditions in the farmland have become very poor, which is not only not conducive to the growth of pests, but also harms other beneficial insects and destroys the original food web.
Error prevention. Red beetles are good at stealth, can lurk in plants, are difficult to detect, and when applying pesticides, the effect of pesticides is also limited, and all pests cannot be eliminated.
In addition, the hair on its body is also a water-resistant substance, which can prevent the drug from coming into contact with its **, so that its ability to control harmful organisms is not strong enough.
Hazardous characteristics. Compared to other species of pests, this species has a wide geographical location and has its own unique morphological and behavioral characteristics.
Geographical location. It is an important agricultural pest, mainly for corn, sorghum, strawberries, cucumbers, cotton, dates, beans, watermelons, etc.
It mainly lives in plants and relies on spines to suck chlorophyll particles and cell fluids in plants, thus hindering the photosynthesis of plants and also hindering the accumulation and delivery of nutrients. The infested leaves will initially have brown spots the size of pinpoints, then slowly spread, causing the entire leaf to turn yellow until it dies.
Kinetic characteristics At this time, it is winter, the spider spider mainly lives in litter, rubble crevices, weeds and bark, when the temperature rises to 7, the species will reproduce, and when the temperature rises to 10, the species will become more active.
At first, there was a dotted diffusion, and under the condition of suitable temperature and humidity, it spread rapidly; It first damages the leaves of the lower part of the plant, then moves to the upper leaves, gathers into clusters, and spreads to the whole plant; In April and May, a large number of people began to migrate into farmland, and June and August were the most harmful seasons.
Compared with other species of insects, the head, thorax and abdomen of leaf mites are difficult to distinguish, without wings, without compound eyes, with 4 pairs of legs, some of which have 2 pairs of legs.
The species of spider mites vary from crop to crop, such as the general wheat long-legged spider, which has a body length of 061 mm, width 022 mm, round in shape, reddish-brown in body, four orange legs, one well-developed quadruped, compared to the wheat round spider, the body shape is very different.
Prevention and ** methods.
While controlling the occurrence of pests, it is necessary to adopt the method of comprehensive management, and on the basis of enhancing the stress resistance of plants, make full use of physical, biological and chemical means to control the spread of pests and eliminate pests.
Be diligent in getting rid of pests. In the daily operation of farmland, it is necessary to frequently remove weeds, remove weeds, remove weeds, remove dead branches, break the living conditions of red spiders, eliminate some pests, and reduce the population in the farmland;
It is necessary to apply good water to the vegetables in time, irrigate them regularly, ensure the supply of water and nutrients in the farmland, make them grow robust, and improve the resistance to pests.
Use bugs against bugs. A variety of pests have their natural enemies, which can be controlled according to their characteristics, so that they are not resistant to pests, and can achieve long-term control, but there are problems such as high cost, long control time, many uncertain factors, and high demand for technology.
If you want to eliminate spider mites, you can put predator mites, ladybugs, heterovelvet mites, flower bugs and other natural enemies into the farmland at a specified rate, so as to prevent them from wreaking havoc in the farmland.
with the drug ** pests. Chemical control technology has the advantages of fast pest control and less time limitation, and special insecticides such as avermectin EC, pyridenone EC, bifenthrin microEC and other special insecticides can be selected.
Before spraying drugs, we must carefully read the "Pesticide Application Guide", according to the hazards of pesticides, according to the type and quantity of pesticides to determine the dosage and concentration of drugs, wear protective equipment when spraying, and do standard spraying to reduce the probability of pesticide residues.
Use glue to ** bugs. The data show that about 80% of the insects come from the ground, and spraying mucus on the surface of the plant can block their migration path, and block their migration path at the lower end of the plant, so as to block their source of insects.
The present invention is suitable for a small area of non-leafy vegetable field, and the first application is before the red spider just begins to climb the plant, the surface of the plant is too rough, the tape can be glued together, and then the glue is evenly applied to it, the width is 5 cm, once every 2-3 months.
In short, in the vegetable field, the harm of red spiders can not be underestimated, we must be vigilant, pay attention to monitoring and prevention, and actively deal with it, if you ignore the control of pests, or use some incorrect ways to eliminate pests, it is asking for trouble.