论文部分内容阅读
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/100m2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2780.32kg/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。
The effects of different density Meriones unguiculatus on the growth and compensatory growth of spring wheat under simulated conditions were studied in Wanquan County, Hebei Province. The results showed that the growth of wheat in low density group (I, II) was more than or equal to the grazing amount, that is, the growth of wheat was stimulated by the feeding of wheat; the grazing of high density group (ⅡI, IV) was higher than that of wheat The amount of wheat growth decreased. When the density of rodents was 4 / 100m2, the wheat could compensate the growth by itself to achieve the compensation of the yield, the highest yield was 2780.32kg / hm2. Compared with the control group, the yield and thousand-grain weight increased slightly, The number increased significantly. It shows that wheat can reduce the loss by compensating the growth under the condition of low-density mouse; the medium-density rat’s density leads to the wheat yield reduction, and the higher the mouse density, the heavier the wheat loss.