自从苏联农业专家伊万诺夫院士来我国讲学,将他们的选种方法和田间技术传授给我们以后,我们过去的一套选种方法都要改变了,因此我们去年的小麦选种工作即从原始材料做起。按照苏联原始材料圃的做法,其播种工作是一个需要非常细致而费工的工 Since the Soviet agricultural experts Ivanov came to our country for lectures and passed on their methods of selection and field technology to us, our past selection method of selection has to be changed. Therefore, last year’s wheat selection work was carried out from The original material to start. According to the practice of the Soviet Union’s original material nursery, its planting is a work that requires a great deal of care and labor