不同抗旱措施对侧柏造林成活率影响的研究

Effect of Different Drought—resistant Measures on the Survival Rate of the Platycladus Orientalis for Plantation

在太行山石灰岩地区进行了不同造林时间、截干部位、栽植深度、覆盖深度及蘸施抗旱剂等侧柏造林试验。结果表明:侧柏造林阴坡可在3月中旬～4月上旬和7月上旬～8月上旬,阳坡只能在7月上旬～8月上旬;春季和雨季半截造林成活率分别比对照提高25.1％和17.7％;深栽10cm可提高成活率28.5％;三块石覆盖造林可提高成活率29％;蘸施1％抗旱剂可提高成活率11.3％。采用组合配套措施春季以深栽10cm,截干1/2、覆盖三块石可提高成活率22.1％,雨季以深栽10cm、蘸1％抗旱剂、截干1/2可提高成活率16％。利用组合措施造林,可以一次造林成功,无需补植或重造。

Experiments as to silviculture time, cutting position, deep of planting, deep of covering and application of drought—resistant reagent in the limestone region of Tai Hang mountain area show. It's suitable to plant the Platcladus orientalis on sunless side, both from the second 10 days of March to the first 10 days of April and the first 10 days of July to the first 10 days of August but on sun side it's suitable only from the first 10 days of July to the first 10 days of Aagust. The silviculture survival rate can be increased by 25.1% and 17.7% respectively than the contrast by cutting in spring and rainy season, increased by 28.5% by deep cultivating (10m); increased by 29% by three—stone covering, increased by 11.3% by using 1% drought—resistant reagent in rainy season. By taking combination measares of deep caltivating (10m),catting (1/2) and 3—stone coveving, the rate is increased by 22.1% in spring, measurses of deep cultivating (10m), cutting (1/2) with 1% drought—resistant reagent increased by 16% in rainy season.