一、去年的经验农业生物的本身受外界因子的影响很大,不可能以一套一战不变的形式主义作法去从事试验研究。因而我们的田间试验工作只在农场一小块地来观察农作物的生长规律,往往是不能代表不同土壤、气候 First, the experience of last year The agricultural biology itself is greatly influenced by external factors and it is impossible to conduct experimental research in a set of world war-free formalistic practices. Therefore, our field experiment only observes the growth pattern of crops on the farm, often not representing different soils, climate