CAJ | 학술논문

采用培育55 d的银新杨、白榆和文冠果营养钵苗在生长季6月、7月和8月不同时间进行造林，测定缓苗期3个树种叶片的光合指标，以期为幼苗缓苗期的管理提供依据。结果表明：3个树种的光合指标均存在显著差异。同一树种不同造林时间的净光合速率无显著差异，蒸腾速率、气孔导度、胞间CO2浓度则存在差异，以7月的值最大。3个树种在不同造林时间的光合特性变化基本一致，净光合速率、蒸腾速率、气孔导度与胞间 CO2浓度在栽后1～3 d出现持续下降，4 d开始回升，5～7 d内恢复到栽前水平。3个树种在不同造林时间的缓苗期为5～7 d，此时应该加强土壤水分的管理，保证水分供应充足，确保幼苗尽快度过缓苗期，提高造林成活率。
채용배육55 d적은신양、백유화문관과영양발묘재생장계6월、7월화8월불동시간진행조림，측정완묘기3개수충협편적광합지표，이기위유묘완묘기적관리제공의거。결과표명：3개수충적광합지표균존재현저차이。동일수충불동조림시간적정광합속솔무현저차이，증등속솔、기공도도、포간CO2농도칙존재차이，이7월적치최대。3개수충재불동조림시간적광합특성변화기본일치，정광합속솔、증등속솔、기공도도여포간 CO2농도재재후1～3 d출현지속하강，4 d개시회승，5～7 d내회복도재전수평。3개수충재불동조림시간적완묘기위5～7 d，차시응해가강토양수분적관리，보증수분공응충족，학보유묘진쾌도과완묘기，제고조림성활솔。
The Populus alba × Populus bolleana,Ulmus pumila,Xanthoceras sobifolia Bunge nutrition seedlings were planted in June,July and August growing season,the photosynthetic characteristics of three species were measured at rej uvenation period,so as to provide a basis for afforestation management at recovering stage. The results showed that photosynthetic characteristics of three tree species were significantly different;for the same tree species,net photosynthetic rate was not significantly different in different afforestation time,transpiration rate,stomatal conductance and intercellular CO2 concentration were different,the maximum value appeared at July.The variation of photosynthetic characteristics of three species was basically same in different afforestation time,net photosynthetic rate,transpiration rate,stomatal conductance and intercellular CO2 concentration continued to decline from 1 d to 3 d after transplanting,began to rise at 4 d after transplanting,restored to the level before planting from 5 d to 7 d after transplanting.The recovering stage of three different tree species was from 5 d to 7 d after transplanting,at this point the management of soil moisture should be strengthened and adequate water should be supplied to ensure the seedlings spend recovering stage as soon as possible,and increase the survival rate.