论文部分内容阅读
去冬今春,唐山市植苗造林31万亩,平均成活率达86.1%。一批重点造林工程苗齐苗壮,栽植标准高,管护及时到位,一次造林,一次成林,成活率均达到了95%以上。但有部分地块苗木干枯死亡。为查清原因,找出解决办法,我们抽取了迁西等4个县(市、区)植苗造林成活最差的5个地块(段),对新植苗木成活情况进行了调查。结果为杨树植苗造林平均成活率28.7%,最低20%,最高60%;板栗嫁接苗栽植,成活株数仅有6%。
To winter and spring, Tangshan City planting 310000 acres of seedlings, the average survival rate of 86.1%. A number of key afforestation project Qiezhuangzhuang Zhuang, planting high standards, management and protection in place, once afforestation, once into a forest, survival rates have reached more than 95%. However, part of the land nursery death. In order to find out the reasons and find out the solution, we extracted 5 plots (sections) with the worst survival rate of seedling and afforestation in 4 counties (cities and districts) such as Qianxi and investigated the survival of newly planted seedlings. The results showed that the average survival rate of poplar planting seedlings was 28.7%, the lowest 20%, the highest 60%; chestnut grafted seedlings planted, survival of only 6%.