取样调查方法田间调查记载,一般采用选点取样的方法,就是在每块试验田里,选定几个具有代表性的样点,在这几个样点进行系统调查。取样能否代表大田,直接关系到调查资料的正确性。因此,样点一定要选择恰当,要能反映出试验田的一般情况。除小区试验外,选点一定要离四周田岸或小路1米以上,避 Sampling survey method Field survey records, the general use of point sampling method, that is, in each experimental field, selected a few representative sample points in these samples for systematic investigation. The sampling can represent the field, is directly related to the correctness of the survey data. Therefore, the sample must be selected properly, to reflect the general situation of the experimental field. In addition to cell testing, the election point must be four minutes from the field or more than 1 meter, avoid