The corn borer is also known as the corn drywing moth, belonging to Lepidoptera and Noctuidae. Its larvae generally harm corn, millet, sorghum and other crops at the seedling stage and is one of the main pests of corn.
1, the law of occurrence and hazard characteristics: corn borer larvae generally occur one generation a year, eggs overwintering in the weeds, in the next year in mid-May hatch. The newly hatched larvae first feed on the weeds that have returned to the green, and they turn to corn on the first half of June to harm them. The larvae mostly invaded from the underground part of the corn seedling stems, gradually feeding upwards, the dead corn seedlings dead heart, a few even cut off the young stems of corn, the larvae endanger period of about a month, at the end of June in the vicinity of the underground 5-15 cm of the injured plant Huayu, in early July for the period of phlegm, adult eclosion from July to August to fly on the weeds, each female can lay 200 eggs, wintering eggs. Adult phototaxis, larvae habit of killing each other. In May, the coordination of rainwater and moist weather are favorable for its occurrence.
2. Control measures: (1) Agricultural control. Remove weeds in the field and reduce overwhelming insect sources. (2) Chemical control. 90% crystals of trichlorfon 1000 times or 80% dichlorvos EC 1000 times to root, 200 kg per acre of liquid medicine. It is also possible to use 92.5% trichlorfon powder 1 kg, mixed with 20 kg of fine soil, sprinkled around the corn roots.
CAD/CAM dental systems refers to the software used to both design and mill dental prosthetics. CAD (Computer Aided Design) includes digitally scanning, while CAM (Computer Aided Manufacturing) is the process of sending final models to the output device and manufacturing them through milling or 3D printing. DGSHAPE devices and software are specifically engineered to perfectly fit into this digital workflow.
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