摘要
[目的]提高绒毛皂荚场地发芽率,加速种群回归。[方法]在特定的森林环境进行育苗技术组合试验,并以苗圃常规育苗为对照,研究不破坏林地环境的小铲破土和地表播种+死地被物多种覆盖方式技术组合对发芽率与苗木生长的影响。[结果]小铲破土播种或地表播种加4种不同死地被物覆盖方式技术组合的场地发芽率分别为(A_(1))61.67%、(A_(2))55.56%、(A_(3))61.11%、(A_(4))57.22%,均高于常规育苗(CK)的35.03%;A_(1)小铲破土播种后,盖1 cm厚表层有机土+3 cm厚粗腐殖质+未分解的枯枝落叶组合和A_(3)种子直播土壤地表后,盖3 cm厚的粗腐殖质+未分解枯枝落叶同为最佳组合;常规育苗的苗木成苗率(成苗数与发芽数之比×100%)与苗木生长量略高于其他处理;但从成苗数的绝对数比较,CK小于A_(1)、A_(2)、A_(3)、A_(4)处理的106、85、95和88株。[结论]特定的森林环境母树下小铲破土或地表播种后+林地死地被物覆盖组合育苗是提高场地发芽率和成苗数的有效方法。
[Objective]In order to improve the germination rate of Gleditsia vestita in the field and accelerate the population regression.[Method]The combined seedling cultivation technology test was carried out in a specific forest environment and compared with the conventional seedling cultivation in the nursery.In this research,the effects of technology combination including small shovel breaking,surface seeding and dead cover on germination rate and seedling growth were studied.[Result]The results showed that the germination rates of small shovel breaking seeding or surface seeding combined with 4 different dead cover were(A_(1))61.67%,(A_(2))55.56%,(A_(3))61.11%and(A_(4))57.22%,respectively,which were higher than the(A 5)35.03%of conventional cultivation seedling.Both A_(1)(seeds were planted after the small shovel broke the soil,and covered by 1cm thick surface organic soil+3 cm thick coarse humus+undecomposed litter layer)and A_(3)(seeds were sown on the surface of the soil,and covered with 3 cm thick coarse humus+undecomposed litter layer)are the best combination.The seedling rate(ratio of seedling number to germination number×100%)and seedling growth quantity of conventional cultivation seedling were slightly higher than those of other treatments,which indicated the importance of seedling management.However,from the comparison of the total number of seedlings,the conventional cultivation(60 seedlings)were smaller than A_(1)-A_(4)treatments(106,85,95 and 88 seedlings,respectively).[Conclusion]It is an effective seedling method to increase germination rate and seedlings number in a specific forest environment under the mother tree by using the combination of shovel breaking or surface seeding with forest dead litter covering.
作者
旷柏根
曾臻
谢咏红
文儒仁
周春桃
KUANG Bai-gen;ZENG Zhen;XIE Yong-hong(Nanyue Arboretum in Hunan Province,Hengyang,Hunan 421900;Hengyang City Forestry Bureau,Hengyang,Hunan 421200)
出处
《安徽农业科学》
CAS
2024年第9期84-86,共3页
Journal of Anhui Agricultural Sciences
基金
湖南省林业科技创新项目“濒危植物绒毛皂荚传粉生物学及繁育系统研究”(XLKY202222)。
关键词
绒毛皂荚
特定森林环境
死地被物覆盖组合
育苗
Gleditsia vestita
Specific forest environment
Dead litter layer cover combination
Seedling cultivation
