摘要
试验选择在甘肃省武威市民勤县绿洲外缘与沙漠交接地带,以退化的人工梭梭林和天然白刺灌丛为受试植物,辅以滴灌措施,应用多功能高分子植物固沙种草剂进行沙生植物复壮试验研究。结果显示,白刺和梭梭施用试剂的抗旱、保水效果都很显著,尤其在白刺上的使用效果更好;滴灌施用试剂时,梭梭单梢干重平均值、最大新梢长平均值、最小新梢长平均值和最大新梢径平均值,滴灌施用试剂时均比滴灌对照、无滴灌对照和无滴灌试剂高得多;白刺灌丛高、径和冠幅增大,其中,滴灌试剂处理相对滴灌对照处理和免灌对照处理冠幅增长率分别为42.4%和174.4%。可见,该试剂不仅有利于保持林下土壤水分、有效提高其抗旱能力,而且还能够促使植物快速生长,对退化植被有很强的恢复能力。
The study area is located in the adjacent region of the Minqin Oasis in Gansu Province with the Tengger Desert and the Badain Jaran Desert. A multi-functional high polymer reagent was used to recover the degenerative psammophytes by the supplement of drip irrigation. As a result, the 0～230 cm layer average moisture contents under the Nitraria gngutorum and the Haloxylon ammodendron were higher than those of the control ones, especially that under the Nitraria tangutorum was the highest. Besides, the average dry weight of the single tip, the average length of the largest new tip, the average length of the smallest new tip, and the average diameter of the biggest new stalk of the Haloxylon ammodendron in the drip irrigation experiment were much higher than those of the .control ones, respectively. The main growth changes of the Nitrarig engutorum are shown in the height, stalk, and cap in the drip irrigation experiment. It is obvious that this ieagent not only kept higher moisture in soil under the psammophytes, but also promoted the growth of plants and recovered the degenerative vegetation cover.
出处
《中国沙漠》
CSCD
北大核心
2006年第1期152-154,共3页
Journal of Desert Research
基金
甘肃省环境保护局项目"多功能高分子植物生长调节剂在固沙
绿化中的应用研究"资金(GH2001-13)
甘肃省自然科学基金(ZS011-A25-063-Y)
甘肃省教育厅基金(无编号)
教育部2002年"西部地区高等学校高级访问学者计划"基金(无编号)
西北师范大学科技创新项目基金(NWNU-KJCX-02-20)资助
关键词
多功能高分子固沙种草剂
沙生植物
白刺
梭梭
复壮试验
multi-functional high polymer reagent
Dsammophytes
Nitraria tangutorum
Haloxylon am- modendron
drip irrigation
recovery experiment
