CAJ | 학술논문

为了研究不同浓度PEG溶液对西藏那曲地区不同退化草甸草地土壤种子库种子萌发的影响，采用0、-0．2、-0．4、-0．6、-0．8、-1．0、-1．2、-1．4、-1．6、-1．8Mpa的PEG溶液浸泡不同退化草甸草地土壤种子库种子后进行萌发试验，记录发芽数。结果显示．采用空白处理以及不同浓度的PEG溶液处理不同退化草地土壤种子库种子时，空白处理种子发芽率最高，且随着PEG浓度的增大，种子的发芽率逐渐降低。另外，土壤种子库中的植物种子因年份和草地退化程度的不同而有所变化。
위료연구불동농도PEG용액대서장나곡지구불동퇴화초전초지토양충자고충자맹발적영향，채용0、-0．2、-0．4、-0．6、-0．8、-1．0、-1．2、-1．4、-1．6、-1．8Mpa적PEG용액침포불동퇴화초전초지토양충자고충자후진행맹발시험，기록발아수。결과현시．채용공백처리이급불동농도적PEG용액처리불동퇴화초지토양충자고충자시，공백처리충자발아솔최고，차수착PEG농도적증대，충자적발아솔축점강저。령외，토양충자고중적식물충자인년빈화초지퇴화정도적불동이유소변화。
In order to study the effects of different concentrations of PEG solution on the seed germination of soil seed banks of different degraded meadow in Naqu of Tibet, the seeds in the seed banks of different soil degraded meadow were soaked in 0,-0.2,-0.4,-0.6, -0.8,-1.0,-1.2,-1.4,-1.6,-1.8 Mpa of PEG solution respectively to make the seed germination experiment and the germination number were recorded. The results showed that the germination rate of seeds in blank treatment was the highest and the seed germination rate gradually decreased with the increase of PEG concentration when the seeds in the seed bands of different degraded meadow were treated with blank treatment and different concentrations of PEG solution. Otherwise, plant seeds in soil seed bands changed with different years and degraded degree of meadow.