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以早枯、本地早、槾枯3品种在乔砧稀植下的产量作空白试验,结果表明:增加重复次数与增大小区面积(或株数)一样,误差下降开始很快,重复至8次后再增加重复次数,误差下降缓慢;在一个处理总面积不变的情况下,增加重复次数而不增大小区面积,与增大小区面积而不增加重复次数相比,前者误差下降快且误差百分率小;在一个处理总株数为8或16株树时,采用2株树小区,重复4或8次,则误差早枯可控制在8—9％。本地早在5—6％,槾桔在13—15％。
The results showed that increasing the number of repetitions was the same as increasing the plot area (or number of trees), the error decreased rapidly and was repeated up to 8 times And then increase the number of repetitions, the error slow down; in a case of a fixed total area, increase the number of repetitions without increasing the area of the cell, and increase the size of the cell without increasing the number of repetitions compared to the former rapid decline and error error The percentage is small; in a treatment of a total number of plants for 8 or 16 trees, the use of two tree cells, repeated 4 or 8 times, the error can be controlled early withered in 8-9%. Local as early as 5-6%, oranges at 13-15%.