合水林区中华鼢鼠防治技术研究

中华鼢鼠在合水林区主要危害植物的根系，喜食油松、华山松及宾草等20多种植物，其种群密度为13只／hm^2，5只／hm^2以上时必须进行防治。1a2胎，1胎1～4只，3-6月和9-10月为防治的最佳时期，防治方法主要采取“三结合五同步”的有效做法，即常年防治与临时突击队相结合，专业队伍与群防相结合，药物防治与器械捕杀相结合，灭鼠同整地、造林、补植、抚育、管护同步进行。

Control techniques against Sicista concolor in Heshui of Gansu Province

Sicista concolormainly harmed the roots of plants such asPinus armandFranch.,P. tabu- laeformisCarr.and so on in Heshui of Gansu Province.The population density ofSicista concolorwas 13 per hm2.The threshold of control was 5 rats per hm2.A rat gave 2 births a year with a litter of 1- 4 sons.The optimum time for control was from March to July and from September to October.The ef- fective control methods were the combination of regular control and rush control,specialists and mass, rodenticides and apparatus killing,and control should be carried on in step with the ground prepara- tion,offorestation,reinforcement planting,tending and management.