草业科学
草業科學
초업과학
PRATACULTURAL SCIENCE
2009年
12期
118-123
,共6页
伊犁绢蒿%生物量分配%刈割%放牧
伊犛絹蒿%生物量分配%刈割%放牧
이리견호%생물량분배%예할%방목
Seriphidium transiliense%biomass allocation%clipping%grazing
为了解伊犁绢蒿Seriphidium transiliense在不同干扰条件下资源分配特点,分别测定了刈割和放牧条件下根、茎、叶、花(种子)的生物量.结果表明:刈割引起伊犁绢蒿对根生物量分配增加,茎和叶生物量分配减少,随刈割强度的增加,根生物量分配增加8%~20%,茎生物量分配减少5%~14%,叶生物量分配减少3%~6%;放牧引起伊犁绢蒿对根生物量分配增加,茎和叶生物量分配减小,有性生殖分配减少,生物量分配趋势为:根>茎>叶>花/种子,根生物量分配为45%~67%,占优势地位,而有性生殖分配较小,在1%以下.且刈牧干扰下,伊犁绢蒿优先将资源分配给营养贮藏器官--根.
為瞭解伊犛絹蒿Seriphidium transiliense在不同榦擾條件下資源分配特點,分彆測定瞭刈割和放牧條件下根、莖、葉、花(種子)的生物量.結果錶明:刈割引起伊犛絹蒿對根生物量分配增加,莖和葉生物量分配減少,隨刈割彊度的增加,根生物量分配增加8%~20%,莖生物量分配減少5%~14%,葉生物量分配減少3%~6%;放牧引起伊犛絹蒿對根生物量分配增加,莖和葉生物量分配減小,有性生殖分配減少,生物量分配趨勢為:根>莖>葉>花/種子,根生物量分配為45%~67%,佔優勢地位,而有性生殖分配較小,在1%以下.且刈牧榦擾下,伊犛絹蒿優先將資源分配給營養貯藏器官--根.
위료해이리견호Seriphidium transiliense재불동간우조건하자원분배특점,분별측정료예할화방목조건하근、경、협、화(충자)적생물량.결과표명:예할인기이리견호대근생물량분배증가,경화협생물량분배감소,수예할강도적증가,근생물량분배증가8%~20%,경생물량분배감소5%~14%,협생물량분배감소3%~6%;방목인기이리견호대근생물량분배증가,경화협생물량분배감소,유성생식분배감소,생물량분배추세위:근>경>협>화/충자,근생물량분배위45%~67%,점우세지위,이유성생식분배교소,재1%이하.차예목간우하,이리견호우선장자원분배급영양저장기관--근.
In order to understand the resource allocation pattern under clipping and grazing conditions, the biomass of root, stem, leaf and flower (seed) of Seriphidium transiliense was measured. The results showed that the clipping treatment increased the biomass allocation to root but reduced that to stem and leaf, and with the increase of clipping intensity the ratio of biomass allocation to root increased by 8% to 20% with the increasing clipping intensity, the ratio to stem and leaf relevantly decreased by 5% to 14% and 3% to 6% respectively. The grazing treatment showed the same impact. The biomass allocation pattern was root > stem > leaf > flower (seed), the biomass allocated to root accounted as much as 45% to 67%, and biomass for sexual growth was less than 1%. The priority of biomass was given to reserve organ (root) under clipping and grazing conditions.