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开展杂草调查,摸清我省农田杂草种类、分布和危害,对制定综合防除农田杂草的规划,指导大面积防治和提高植物保护工作具有重要意义。标本是生物性状和分布的记载,也是形态特征最好的描述。要开展杂草调查,必须采集大量的杂草标本。检查目前送至四川省农科院植保所标本馆的大小春农田杂草标本,还有一部分不符合要求。主要是有的标本不具有花和果实;有的
Conducting weed surveys to find out the types, distribution and hazards of farmland weeds in our province is of great significance in formulating plans for comprehensive prevention and control of weeds in farmland, guiding large-scale prevention and control and improving plant protection. Specimens are records of biological traits and distributions and are the best description of morphological characteristics. To carry out weed surveys, we must collect a large number of weeds specimens. Check the size of the spring and spring weeds sent to the Sichuan Provincial Academy of Agricultural Sciences Museum specimens, some still do not meet the requirements. There are mainly specimens that do not have flowers and fruits; some are