摘要
本文对不同施肥处理条件下,落叶松叶片及根系含N量及光合特性、叶绿素含量进行测定分析,结果表明:少量施入肥料时,N元素从根部向叶片转移的速度加快,对植株光合和呼吸效率的促进作用最大。但随着施肥量的增加,促进作用降低;施肥量1.30kg/100m2是较为适合落叶松幼林的施肥方案。
This paper analyzed the N content of leaf and root, photosynthetic characteristics, and chlorophyll content afterthe different fertilization conditions. The results showed that the N elements transfer speed was accelerated from the root tothe leaf when a small amount of fertilizer was applied, and the promoting effect was the largest for the photosynthetic and re-spiratory dfficiency. But with the increase of the amount of fertilizer, the promoting effect was reduced. The suitable fertili-zation for the young growth of L. gmelinii was applied fertilizer 1. 3 kg per 100 square meter.
出处
《林业勘查设计》
2017年第1期81-82,共2页
Forest Investigation Design
关键词
落叶松
施肥
养分含量
光合特性
Larix gmelinii （Rupr.） Kuzen
fertilization
nutrient content
Photosynthetic Characteristics
