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为了及时提供产量信息,研究生产情况,收前测产是农业生产、科研的一项必要手段。测产方法有生产单位的经验目测,农业部门的穗粒结构测产,其它有关部门的抽样实打等等。不同测产方法获得的产量都有一定的差异。目测全凭经验,且计产取整不取零,结果出入较大。点片抽样实打,
In order to provide timely output information, research production, pre-harvest measurement is an essential means of agricultural production, scientific research. Production methods have the experience of the production unit visual inspection, the agricultural sector of grain structure test production, the other relevant departments of the real sample and so on. Different production methods have different yields. Visual based entirely on experience, and production and production rounding do not take zero, the result of a larger discrepancy. Spot sampling hit,