摘要
采用Lloyd(1967)、Iwao(1968) 提出的聚集强度分析方法,测定了33块稻田二化螟枯鞘株田间分布型,结果一致表明,二化螟防治适期田间枯鞘株分布型属聚集分布。根据调查结果,分别制定了二化螟枯鞘株序贯抽样公式、抽样表和图。
The ficld distribution pattcrns of withered sheaths injured by rice stem borcrs in 33 fields were examined by means of aggregated intensity analysis method proposed by Lloyd(1967) and Iwao(1968). The results showed that the field distribution of withered sheaths injured by rice stem borers in the fields where the rice stem borers wcrc controled on time belonged to aggregated distribution. Based on the investigated data, the formulas, tables and diagrams of sequential sampling for the withered sheaths injured by rice stem borers were proposed respectively.
出处
《江西农业大学学报》
CAS
CSCD
1992年第2期137-144,共8页
Acta Agriculturae Universitatis Jiangxiensis
关键词
二化螟
枯鞘
分布
序贯抽样
水稻
Chilo supprcssalis
Rice withered sheath distribution
Sequential sampling
