---

期 刊 ：植物保护学报 2009年

关键词：长爪沙鼠；小麦；鼠密度；补偿生长量；

Keywords:Mongolian gerbil (Meriones unguiculatus), wheat, density of rodent, compensation growth,

摘 要 ：在河北省万全县研究了模拟条件下不同密度的长爪沙鼠对春小麦生长量及补偿生长量的影响。结果表明,小麦生长期间,低密度组(I、II)小麦生长量超过或等于被啃食量,即鼠的取食刺激了小麦生长;高密度组(III、IV)鼠的啃食高于小麦的生长量,小麦生长量下降。当鼠密度为4只/100m²时,小麦能通过自身补偿生长,实现产量的超补偿,其产量最高为2780.32kg/hm²;与对照组相比,产量、千粒重等指标略有升高,穗粒数明显增加。说明在低密度鼠的条件下,小麦可通过补偿生长而降低损失;中等以上的鼠密度则导致小麦减产,且鼠密度越高,小麦损失越重。

Abstract:Under the simulated conditions, this study explored the effect of different densities of Mongolian gerbils, Meriones unguiculatus, on spring wheat. Tests were carried out in Rodent Monitoring Experiment Station, Wanquan County, Hebei Province. The result shown that there are two kinds of situation between different densities of Mongolian gerbils and the effect of wheat growth: on lower-density group (I, II), wheat growth was more than or equal to the gerbils browsing amount, which the gerbil browsing to stimulate the growth of wheat; on high-density group (III, IV), wheat loss is much higher than their own growth and that has not compensated for. When the density ≤4 voles/100m², Mongolian gerbil could stimulate wheat growth, and in this density wheat is the highest yield (2780.32kg/hm²) and compensate growth. In lower density of the gerbils in farmland is conducive to the growth of wheat. Wheat under conditions of low-density rat can compensate for the growth and reduce losses. When density of rodents over the average, the wheat production declined; and the higher density of rodents, the more loss of wheat.

---