引言农业生产战线上无论是改革耕作制度,选择优良品种,合理使用化肥等,一般都需要通过试验。农业上的试验周期比较长,而且情况比较复杂。现在所用的简单对比的试验方法往往不能适应农业上比较复杂的试验项目。如果没有一个好的试验安排,不是得 Introduction On the agricultural production front, both the reform of the farming system, the selection of fine varieties and the rational use of fertilizers generally require experimentation. The experimental period in agriculture is long and the situation is rather complicated. The simple, comparative test methods used today are often not adapted to the more complex pilot projects in agriculture. If you do not have a good experimental arrangement, you do not have to