调运农作物种子必须实施植物检疫杨永生种子调运既是交流优良品种、高产丰收的重要手段，同时也为农作物危险性病虫、杂草传播、蔓延带来可乘之机，是病虫害猖獗的隐患。所以调运农作物种子必须实施植物检疫，才能防止危险性病、虫、杂草传播、蔓延，保障农业生产高产丰收... Seeding Crop Seeds Must Implement Plant Quarantine Yang Yongsheng Seeding of seeds is not only an important means of exchanging good varieties and yielding crops, but also a potential opportunity for crop pest and weed spread and spread. It is also a pest of diseases and pests. Therefore, the deployment of crop seeds must implement phytosanitary measures in order to prevent the spread of dangerous diseases, insects, weeds, spread, to ensure that agricultural production of high yield harvest ...