The diamondback moth is a pest of the lepidoptera Plutella xylostellae family, commonly known as filariae, and two-tiped. It is a national pest that mainly harms cruciferous vegetables such as balsamic, cauliflower, radish, lettuce, rape, etc., and can also feed on wild crucifer crops. Plutella xylostella is more than algebra every year. The long-term and simple use of pesticides in the production of cockroaches increases the level of resistance and direct resistance of the diamondback moth, and increases the amount of drug used, but the effect decreases. Therefore, the adoption of comprehensive prevention and control and the rational use of pesticides to delay their resistance are very important issues.
Plutella xylostella feed on leaves, flowers and buds. Initially, the larvae sneaked to feed on the larvae. After the second larvae, they were fed on the back of the leaves, leaving only the epidermis to resemble a skylight, affecting photosynthesis. In cabbage and Chinese cabbage, leaves and leaves can be drilled and excreted, reducing the commercial value of the dish. Plutella xylostella occurs 10-13 generations per year in the country, and there is no stagnation period. The larvae can survive at 0 degrees and all generations of larvae can be harmed. The 2-4 generations of spring were seriously damaged in late March and early May. The diamondback moth is generally occurring every year. It is imperative that the diamondback moth be properly controlled to control the population of the insect population.
According to the principle of comprehensive prevention and control, after the vegetables are harvested, the stubble, deciduous and weeds shall be promptly removed to eliminate the upper larvae and cockroaches. If necessary, black light traps can be used to kill adults, and biological agents can be used to produce pollution-free vegetables. In the use of chemical control, the use of highly toxic and high residue pesticides is strictly prohibited. The use of high-efficiency, low-toxic, low-residue pesticides is limited to three times in a crop, and several pesticides should be used interchangeably to delay drug resistance. The following pesticides can be used for pesticide control: A. avermitilis agents, such as 1.8% abamidine 2000 times, 10% divided by 2000 times, 20% full 1000 times, the effect is better, and can treat other pests. Reduce pest resistance.
The blueberry is a flowering shrub that produces berries that are colored blue to purple, also known as blueberries.
It is strongly related to similar shrubs, such as those that produce cranberries and huckleberries.
Blueberries are small, around 5-16 millimeters (0.2-0.6 inches) in diameter, and have a flared crown at the end.
They are green in color at first, then change to blue-purple as they ripen.
Blue Berry
Blue Berry,Dried Blue Berry,Artificial Berry,Natural Blue Berry
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