Abstract

Niche competition and minerals mobilization control different weed species distribution in cultivated crop fields. A study on standing mustard crop fields for consecutive three years in three blocks of Hooghly district of the Ganga delta, viz. Arambag, Balagarh, and Dhaniyakhali in West Bengal represented a quantitative estimation of weed diversity controlling the available nutrient conditions in the soil. Ecological parameters and diversity indexes indicated that Cyanodon dactylon (Poaceae) was the dominant weed with less than 70% association in the entire ecosystem. The capacities to avail resources like phosphorus, organic matter and other salt ions favor niche stabilization of the weed species.

中文翻译：

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生态位竞争与常规作物田间杂草之间的矿产利用：系统研究

摘要

生态位竞争和矿物质动员控制了耕地中不同杂草种类的分布。在恒河三角洲Hooghly区的三个街区中连续三年进行芥菜站立的田间研究。西孟加拉邦的Arambag，Balagarh和Dhaniyakhali代表了对控制土壤中可用养分条件的杂草多样性的定量估计。生态学参数和多样性指数表明，蓝齿鳄科（禾本科）是优势杂草，在整个生态系统中的杂草少于70％。利用磷，有机物和其他盐离子等资源的能力有利于杂草物种的生态位稳定。