宁波市水库水源涵养林营造经验浅析

Water Conservation Forest Construction Experience in Ningbo Reservoir

结合宁波市水源涵养林2010—2014的造林试验,观测了宁波市两块试验地不同苗木生长、保存情况,重点分析苗木成活率与高程、淹没天数、淹没深度的关系。结果表明：苗木成活率与淹没天数、栽植高程极显著关系,与淹没水深相关性不明显;淹没天数是决定苗木成活率的最关键因素,淹没天数不宜超过10 d;起种高程不宜为平均水位,应至少提高2~5 m,并结合汛限水位综合考虑;苗龄不宜太大,苗龄小比苗龄大苗木易成活;早期养护对提高苗木的成活率有重要作用;苗木支撑的牢固性亦很重要。

Combining 2010-2014 water resources protection forest experiments in Ningbo, obser-ved the growth, survival of different nursery stock, and analyzed the relationship of altitude, submerged days and depth with the plant percent. The results showed that： altitude and submerged days have a significant relationship with the plant percent, the correlation with submerged depth is not obvious. The submerged days are the key point, the days should under 10. The altitude should not be the average water level, raising 2~5 meters is logical, take into account the flood control level. The plant percent of young seedling age is high than the old. Early conservation has impor-tant effect to improve the survival rate. Strong seedling support is also very important.