CAJ | 학술논문

笔者以华北落叶松当年生实生苗为研究对象，通过盆栽控水试验，研究了水分缺失对落叶松幼苗生长的影响。结果表明：土壤轻度缺水对幼苗高生长无显著影响，但针叶长度与侧根数量显著增加，分别增加了27．31％和14．85％．土壤中度和重度缺水显著抑制苗高生长和侧根数量，苗高生长量分别减少10．84％和7．40％，侧根数量分别减少26．33％和42．30％．水分缺失显著促进主根向下生长，长度增加5．73％～18．00％．随土壤水分缺失程度的增强，幼苗含水率不断下降，分别减少22．09％，50．00％和54．65％．
필자이화북락협송당년생실생묘위연구대상，통과분재공수시험，연구료수분결실대락협송유묘생장적영향。결과표명：토양경도결수대유묘고생장무현저영향，단침협장도여측근수량현저증가，분별증가료27．31％화14．85％．토양중도화중도결수현저억제묘고생장화측근수량，묘고생장량분별감소10．84％화7．40％，측근수량분별감소26．33％화42．30％．수분결실현저촉진주근향하생장，장도증가5．73％～18．00％．수토양수분결실정도적증강，유묘함수솔불단하강，분별감소22．09％，50．00％화54．65％．
Current-year-seedling of Larix principis-rupprechtii as material , influence of water deficit on Larix principis-rupp rechtii seedling was studied by water-controlling trails .The results were as follows:growth of seeding was not significantly affected by light water deficit , while leaf longth and lateral root number increased remarkbally with 27.31%and 14.85%. Seedling height and lateral root number were significantly depressed by middle and heavy water deficit and growth of seed -ling height decreased 10.84%and 7.40%respectively;number of lateral root decreased 26.33%and 42.30%.The pri-mary root was improved to downward-growth by water deficit , its length increased 5.73%~18.00%.Seedling water con-tent was decreased by the water deficit in soil , decreased 22.09%, 50.00% and 54.65%, respectively by light , middle and heavy water deficit .