草业学报
草業學報
초업학보
PRATACULTURAL SCIENCE
2015年
4期
48-56
,共9页
刈割%可溶性糖%动态变化%地上与地下%伊犁绢蒿
刈割%可溶性糖%動態變化%地上與地下%伊犛絹蒿
예할%가용성당%동태변화%지상여지하%이리견호
mowing%water-soluble sugar%dynamic change%aboveground and belowground%Seriphidium tran-siliense
伊犁绢蒿是新疆蒿属荒漠草地常见的草地建群种之一，春季担负着家畜体膘的恢复和产羔育幼，秋季家畜要在该草地上贮存更多的能量和为繁衍下一代而进行配种。以蒿属荒漠草地为基础，以伊犁绢蒿为研究对象，结合野外定点取样，分析了伊犁绢蒿根、茎、叶中可溶性糖含量在不同刈割强度下随时间的动态变化，同时，在数据分析的基础上，明确了伊犁绢蒿秋季和春季营养物质贮存和消耗始期，并对不同刈割强度下伊犁绢蒿秋季根中可溶性糖的贮存量与来年春季植物体萌发消耗碳水化合物量之间的关联性做出判断。结果表明，根部可溶性糖含量在10月15日前后完成积累，在来年植株返青时，地下（根部）的营养物质就开始消耗，向地上运输，供植株返青和生长。C2处理不仅在秋季可溶性糖积累最高，而且在来年春季植株返青生长后在体内仍然能保持一个较高的水平，C0处理在秋季或春季植株体内可溶性糖含量在4个处理中总最低，直接影响株体越冬和次年返青。这表明不刈割并不是牧草最好的恢复方式，适度刈割有利于牧草的生长和体内可溶性糖的循环利用，但 C0只能使植株处于劣势或死亡。
伊犛絹蒿是新疆蒿屬荒漠草地常見的草地建群種之一，春季擔負著傢畜體膘的恢複和產羔育幼，鞦季傢畜要在該草地上貯存更多的能量和為繁衍下一代而進行配種。以蒿屬荒漠草地為基礎，以伊犛絹蒿為研究對象，結閤野外定點取樣，分析瞭伊犛絹蒿根、莖、葉中可溶性糖含量在不同刈割彊度下隨時間的動態變化，同時，在數據分析的基礎上，明確瞭伊犛絹蒿鞦季和春季營養物質貯存和消耗始期，併對不同刈割彊度下伊犛絹蒿鞦季根中可溶性糖的貯存量與來年春季植物體萌髮消耗碳水化閤物量之間的關聯性做齣判斷。結果錶明，根部可溶性糖含量在10月15日前後完成積纍，在來年植株返青時，地下（根部）的營養物質就開始消耗，嚮地上運輸，供植株返青和生長。C2處理不僅在鞦季可溶性糖積纍最高，而且在來年春季植株返青生長後在體內仍然能保持一箇較高的水平，C0處理在鞦季或春季植株體內可溶性糖含量在4箇處理中總最低，直接影響株體越鼕和次年返青。這錶明不刈割併不是牧草最好的恢複方式，適度刈割有利于牧草的生長和體內可溶性糖的循環利用，但 C0隻能使植株處于劣勢或死亡。
이리견호시신강호속황막초지상견적초지건군충지일，춘계담부착가축체표적회복화산고육유，추계가축요재해초지상저존경다적능량화위번연하일대이진행배충。이호속황막초지위기출，이이리견호위연구대상，결합야외정점취양，분석료이리견호근、경、협중가용성당함량재불동예할강도하수시간적동태변화，동시，재수거분석적기출상，명학료이리견호추계화춘계영양물질저존화소모시기，병대불동예할강도하이리견호추계근중가용성당적저존량여래년춘계식물체맹발소모탄수화합물량지간적관련성주출판단。결과표명，근부가용성당함량재10월15일전후완성적루，재래년식주반청시，지하（근부）적영양물질취개시소모，향지상운수，공식주반청화생장。C2처리불부재추계가용성당적루최고，이차재래년춘계식주반청생장후재체내잉연능보지일개교고적수평，C0처리재추계혹춘계식주체내가용성당함량재4개처리중총최저，직접영향주체월동화차년반청。저표명불예할병불시목초최호적회복방식，괄도예할유리우목초적생장화체내가용성당적순배이용，단 C0지능사식주처우열세혹사망。
Seriphidium transiliense is one of a common constructive species of sagebrush desert in Xinjiang, which is responsible for livestock recovery body fat,lambing,nurture young in spring pasture and storage next generation in autumn pasture.The paper analyzed the water-soluble carbohydrate dynamic change in roots, stems,and leaves of S .transiliense in different mowing intensities based on the sagebrush desert and field po-sitional sampling.Meanwhile,based on the analysis for data,the beginning stage of nutrient storage and con-sumption of S .transiliense made clear,but also,the relevance was judged between water-soluble carbohydrate storage amount in autumn root and plant consumed carbohydrate for germination in coming year.The results showed that,the content of water-soluble carbohydrate in roots finished the accumulation on Oct.15.When the plants are beginning turning green in the coming year,water-soluble carbohydrate stored in roots trans-ferred from belowground back to aboveground automatically,which providing nutrients to turning green and regrowth.Water-soluble carbohydrate of C2 treatment was different comparing to others,it not only had a highest sugar accumulation in autumn and maintained a higher content after plants turning green and regrowth in coming year,water-soluble carbohydrate content of C0 treatment always the lowest one regardless of in au-tumn or in spring,metabolism was mild recession in plants body and maintaining its life reluctantly.Non-mowing is not the best recovery method,this explained that moderate mowing is advantageous to forage grass growth and recycling.But C0 even presented inferior strength and the death.
