采用空间分布型检验、聚集强度指标检验和线性回归法，研究了设施油白菜地苗期藜科杂草田间分布型及其抽样方法，结果表明:设施油白菜地苗期藜科杂草田间分布型呈聚集分布，聚集受栽培环境影响较大。建立了设施栽培环境下油白菜地苗期藜科杂草理论抽样模型。

The field distribution pattern and sampling method of Chenopodiaceae weeds in seedling stage of protected Chinese cabbages were studied by using spatial distribution pattern test， aggregation intensity index test and linear regression methods. The results showed that the field distribution pattern of Chenopodiaceae weeds in seedling stage of protected Chinese cabbages was aggregation distribution. The aggregation was highly influenced by the growing environment. The theoretical sampling model of Chenopodiaceae weeds at seedling stage of Chinese cabbage was established under protected cultivation environment.

S451.1

武威市科技局项目“武威市设施农业病虫害防控减药技术”(WW2002013)。