基于农田养分管理的杂草生态防控策略

Ecological weed control strategy based on farmland nutrient management

农田杂草是农田生态系统的一个组成部分,揭示杂草种群对养分管理模式的响应及其机制是进一步通过科学的养分管理来实现防控农田杂草的关键。为此,作者总结了农田养分管理与杂草的关系的研究进展、指出了存在的问题,并从农田杂草的重点防控对象、农田优势杂草种群和竞争临界期的确定以及杂草的生态化学计量学特征等方面对杂草生态防控策略进行了分析。在此基础上,作者提出了土壤营养调控假设,期望为制定农田杂草综合管理策略以及保护农田生态环境提供新的思路。

Farmland weed is an important part in agricultural ecological system, and investigating the responses and mechanisms of farmland weed communities to nutrient management patterns is the key for controlling farm- land weeds through rational fertilization. Therefore, the authors summarized the research progress in the relation- ship between farmland nutrient management and weed, and pointed out the existing problems. In addition, we an- alyzed the ecological weed control strategy in terms of key prevention and control species of farmland weeds, con- firmation of farmland dominant weed species and the critical period of competition, and the characteristics of eco- logical stoichiometry of weeds. Based on these analyses, the authors put forward the assumption of nutritional reg- ulation, which would provide a new approach for making better integrated management strategy and protecting farmland ecological environment.