| 河南省封丘农田杂草类型的初步研究 |
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| 引用本文： | 段炼. 河南省封丘农田杂草类型的初步研究[J]. 植物生态学报, 1988, 12(4): 292-299 |
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| 作者姓名： | 段炼 |
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| 作者单位： | 中国科学院研究生院 |
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| 摘 要： | 采用聚类分析的方法，研究阐明在气候差异不明显的冲积平原区，农田杂草类型和相应的土壤类型(相当于土属)有明显的相关性。在划分旱地农田杂草类型时，环境条件的差异比栽培作物具有更重要的指示意义。由于杂草多为广布种，采用聚类分析的方法，比单纯用优势种能够更客观地划分杂草类型。 根据实地观测，指出了封丘地区危害严重的主要杂草种类和危害时间，以及不同环境条件下杂草的分布和危害程度，这对于农业生产上杂草的防除工作有一定指导意义。
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| 关 键 词： | 河南省封丘 农田 杂草类型 聚类分析 |
PRELIMINARY STUDY ON WEED TYPES OF FARM LAND IN FENGQIU COUNTY, HENAN PROVINCE |
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| Duan Lian. PRELIMINARY STUDY ON WEED TYPES OF FARM LAND IN FENGQIU COUNTY, HENAN PROVINCE[J]. Acta Phytoecologica Sinica, 1988, 12(4): 292-299 |
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| Authors: | Duan Lian |
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| Abstract: | Weeds are an important component in the farm land where a complex ecological relationship exists among weeds crops and the environment. The investigation of this relationship has a great significance both in weed control for crop production and in theoretical study of cultivated vegetation.By using cluster analysis, an obvious correlation between weed types and soil types (correspond to soil genera)is found in alluvial plain where no obvious climate difference occurs. In the classification of weed types on dry farm land, the diversity of ecological conditions is of greater significance than dominant crops. Since most of the weeds have widely ecological amplitudes, the cluster analysis method is more objective than using dominants alone in weed classification.This paper also points out the worst weed species With their distribution, seasonal harmfulness and the degree of harmfulness in different environmental conditions. |
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| Keywords: | Fengqiu of Henan province Farm land Weed types Cluster analysis |
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