在农业科学实验运动中,无论是改革耕作制度、选择优良品种,还是合理施肥等,一般都要通过试验。由于农业试验的周期氏,情况比较复杂,常用简单的对比法,往往不能适应比较复杂的试验项目。因此,如何既能尽量少做试验,又能对试验项目得到尽可能多而准确的规律性的认识,是当前农业科学实验中提出的迫切课题。目前在我国推广的正交试验法,就能够较好地适 In the agricultural science experiment movement, whether it is to reform the farming system, choose good varieties, or fertilize rationally, we must pass the test. Due to the periodic nature of agricultural experiments, the situation is rather complicated, often using a simple comparison method, often can not adapt to more complex pilot projects. Therefore, how to try as little as possible and how to get as many regular accurate understandings as possible about the pilot project are the urgent issues raised in the current agricultural science experiment. At present, the orthogonal test method promoted in our country can be well adapted