A company plans to develop a prototype weeding machine that uses cutting blades with optical sensors and microprocessors that distinguish weeds from crop plants by differences in shade of color.
一家公司计划开发一种原型除草机，它使用带有光学传感器和微处理器的刀片，通过颜色的深浅区别杂草和作物。
Manual weeding weeding time. About 7 to 10 days after sowing, seedling emergence, seedling emergence and attention should be paid to control weeds, drill can be inter row weeds.
除草及时进行人工除草。播后约7 ~10天出苗，出苗前后应注意防治杂草，条播者可进行行间中耕除草。
Because of great harm of weeds to mature Manila lawn, in this paper we explained many virtues of chemical weeding in lawn maintenance and its application.
根据杂草在成熟马尼拉草坪中的巨大危害，阐述了化学除草在草坪杂草防除中的优点；
Through tryout, its effect is good. Its preventing and weeding out effect reaches about 85-100 for some major weeds, such as straw, wild arrowhead grass, etc.
经内部试用效果良好，对于稻草、鸭舌草、野慈菇、牛毛草、眼子菜等几种主要杂草防治效果达85- 100%左右。
But there are many problems in the use of chemical weeding so we should take synthetical measures to prevent and cure the weeds.
但是，化学除草在使用中存在许多问题，为此论述农田杂草防治应采取的措施。
But there are many problems in the use of chemical weeding so we should take synthetical measures to prevent and cure the weeds.
但是，化学除草在使用中存在许多问题，为此论述农田杂草防治应采取的措施。
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