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本文讨论了稻纵卷叶螟卵、蛹田间分布型及其适宜的抽样调查方法。分布型的测定主要采用了Iwao(1968)提出的测定方法和频数分布检验。测定结果表明:稻纵卷叶螟卵属核心分布;蛹属负二项分布。抽样方法,着重讨论了随机抽样的四种方式,即:五点式、棋盘式、单对角线式和平行跳跃式。通过样本平均数的比较,认为,调查卵量以对角线式抽样,样数以50蔸为宜,共查10点,每点5蔸,蛹的发生量调查,以平行跳跃式抽样,样数以,50蔸为宜,查两列,每列等距离查5行,两列共10行,每行连续查15蔸。
This article discusses the field distribution of rice leaf roller and pupal rice and their appropriate sampling methods. Distributed measurement mainly used Iwao (1968) proposed measurement methods and frequency distribution test. The results showed that: the rice borer is the core distribution of oviparous; pupa is a negative binomial distribution. Sampling methods, focusing on the four random sampling methods, namely: five-point, checkerboard, single-diagonal and parallel jump. Through the comparison of the sample average, it is considered that the survey eggs are diagonally sampled with a sample size of 50 蔸, a total of 10 points were surveyed, and the incidence of pupae was measured at 5 每 per point. The number of 50 蔸 is appropriate, check two columns, each column equidistant check 5 lines, a total of 10 rows of two, each row for 15 连.