Mention the wheat field pests (excluding underground pests), many people will say aphids, red spiders, suckers, because these 3 kinds of pests are more common, and the occurrence area is widespread, and occur frequently, planting wheat will appear every year, but, in addition to the above 3 common pests, when planting wheat, you will also encounter the following 4 kinds of pests, although not as common as aphids, red spiders, solace worms, but in some areas are not uncommon, and the harm is not small, specifically take a look.
<h1 class= "pgc-h-arrow-right" >1, wheat straw fly</h1>
As a pest in the wheat field, the wheat stalk fly is mainly damaged by larval parasitism, which can burrow into the stem of wheat to feed, on the one hand, it will lead to an increase in ineffective tillers, on the other hand, it is easy to cause wheat to lodging, affect the normal growth of wheat, resulting in yield reduction.
The severity of the occurrence of wheat stalk flies is related to a variety of factors, first, related to varieties, the resistance of different varieties is different; second, there is a relationship with the sowing time, if the sowing time is too early in the wheat field, it is easy to appear strong, and the occurrence of wheat stalk flies will be relatively aggravated; third, the sown wheat fields that have not been mixed are also easily harmed by wheat straw flies; fourth, in the case of insufficient water and fertilizer in the field, the harm of wheat stalk flies is also relatively heavy, especially in wheat fields with relatively poor soil and poor water retention and fertilizer retention ability, wheat growth is poor, and its own resistance is weak.
For the control strategy of wheat straw fly, early prevention is the mainstay, first, the purchase of varieties with strong insect resistance, according to the observation of narrow leaf base, relatively long fur variety hazards are relatively fine, in addition, before sowing must be sown after seeding; second, field water and fertilizer management should be done well to improve their own resistance; third, if the field has appeared wheat straw fly, timely spray chemical agents for prevention and control, the available agents have 10% imidacloprid wettable powder 2500 times liquid or 50% octylthion phosphorus emulsion 2000 times liquid spray, etc.
<h1 class= "pgc-h-arrow-right" >2, wheat armyworm</h1>
Mention the armyworm, not farmers in the corn to see more, in fact, in the wheat field will also appear, the armyworm belongs to the Lepidoptera noctuidae family of pests, in the wheat is also an explosive pest, the harm is greater. Wheat armyworm damage is mainly larvae, will eat wheat leaves, stems and ears of wheat, common hazard symptoms can eat the leaves, bite off the stem and ears of wheat, causing a lot of yield reduction to wheat.
The occurrence of wheat armyworm and sowing methods, field temperature and humidity, cultivation management and other factors are related, strip sown wheat field occurrence is relatively light, in addition, the soil permeability is better in the plot, the occurrence of armyworms will be relatively less, and field weeding, control, watering, fertilizer and a series of management, but also related to the occurrence and harm of armyworms, better management of wheat fields, the occurrence of relatively less.
For wheat armyworm that has appeared in the field, chemical agents can be sprayed in time for control, and the available agents are highly effective cypermethrin, acetaminate, cypermethrin, etc.
<h1 class= "pgc-h-arrow-right" >3, planthopper</h1>
Gray planthopper is a kind of sucking pest, which also appears in wheat fields, and the harm is not small, in the peak period after wheat ear extraction, it can suck wheat grains, and the harm caused to wheat is mainly 3 points.
First, lead to an increase in grains, when the wheat is pumped, the gray planthopper sucks the juice in the wheat grain, the empty rate increases, reducing the quality and yield of wheat; second, the gray planthopper as a propagator of some diseases, accelerate the severity of field diseases, such as wheat striped leaf blight, the number of gray planthoppers, sucking back and forth between multiple wheat plants, resulting in aggravation of the disease; third, leading to the phenomenon of wheat smuts, the gray planthopper sucks wheat grains, the excrement will fall directly on the ears of wheat, over time, will lead to the emergence of blackening of the ears of wheat, Seriously affect the quality of wheat.
For the control of gray planthoppers, in the actual process, many farmers will choose to use imidacloprid, thiazinone insecticide for control, the effect is not bad, but if used for many years, it will also reduce the use effect, farmers can replace pyrithopridone for control.
<h1 class="pgc-h-arrow-right" >4, wheat leaf bee</h1>
Wheat leaf bee is also a common pest in the wheat field, under normal circumstances, a generation can occur a year, serious cases, can lead to a reduction in the number of wheat ears, and then affect the yield of wheat, wheat leaf bee larvae have a suspended animation habit, in addition, the larvae also like to lie diurnal and nocturnal, basically invisible during the day, wait until the evening to start to come out as a pest, to bring certain difficulties to the control work, wheat leaf bees are mainly harmful to the leaf surface of the middle and upper part of the wheat, you can bite the leaves into a neat section.
The occurrence of wheat leaf bees compared to the previous 3 kinds of pests, the frequency of occurrence and the harm area will be smaller, so some farmers are not taken seriously, for the control of wheat leaf bees, mainly take the spray of chemical agents, commonly used agents have 50% octyl thion 1500 times liquid spray, the price is not expensive, the control effect is also good.
Summary: Wheat field pests, in addition to common aphids, red spiders, sucking worms, wheat stalk flies, armyworms, gray planthoppers, wheat leaf bees and other pests, but also to attract the attention of growers, 4-5 months of each year is the outbreak period of pest occurrence, so I hope that everyone will pay attention to good observation, early detection and early control, to ensure the final high yield of wheat.