免耕的主要缺点是更为大量野草生长与更多依赖与农业化学品，因为不用机械方式除草，而用除草剂化学方法除草。
The major drawback of no-till is more abundant weed growth and increased reliance on agrochemicals, since weeding is not done mechanically, but chemically, with herbicides.
联合收割机是结构复杂、科技含量较高的农业机械，其维护保养与保管尤为重要。
Combine harvester is a complex agricultural machinery with high-tech, its maintenance and custody is particularly important.
农业工程师负责执行并监督与农业用地、建筑、机械设备利用开发相关的工程工作。可能要求注册或许可。
Performs and supervises engineering work related to the use and development of agricultural land, buildings, machines and equipment. Registration or licensing may be required.
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