4,

Norman Elliott1, Rafael Hayashida2, Kristopher Giles2

  • 1USDA-ARS, Plains Area, Oklahoma and Central Plains Research Center, Peanut and Small Grains Research Unit, Stillwater, OK, USA.

PubMed
概括

准确地抽取谷物中有益昆虫的样本,对于生物害虫防治至关重要. 两叶计数和计时计数被证明是估计自然敌人人口的最精确和最不偏的方法.

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