杂交水稻种子生产田的除杂去劣工作是否及时,严格,直接关系到生产出来的种子纯度。纯度低的种子不但不能增产增收,还会给大田生产带来损失。但是,在杂交水稻种子生产过程中,常常因为面积大,人员素质不一,特别是种子生产新区,农民往往分不清什么是杂株,什么是种株,而难以顺利完成种子生产 Hybrid rice seed production field removal of impurities to bad work is timely and strict, directly related to the purity of the seeds produced. Low purity seeds not only can not increase production and income, but also to the loss of field production. However, in the process of hybrid rice seed production, often because of the large area and the different quality of personnel, especially the new seed production areas, peasants often can not distinguish what is a hybrid plant and what is a plant type, and it is difficult to successfully complete the seed production