摘要
采用正交试验设计L9（3^4）,通过植物生长所需要的大量营养元素N、P、K三因素三水平及其不同配比的施肥试验,分析了各元素及其水平对贝壳杉苗高和地径生长的影响,确定了贝壳杉（Agathis dam-mara）苗期生长的最佳施肥方案。结果表明,施肥1～8个月不同处理间都呈极显著差异,低水平的营养元素对促进贝壳杉苗高和地径的生长好于高水平,以N1P1K1处理即每株施尿素2.2 g、钙镁磷肥16.6 g、氯化钾1.7 g效果最好,且与其它处理呈极显著差异。对贝壳杉苗高和地径生长的影响,都是N〉P〉K。
The trial was designed by orthogonal L9 （3^4） of N, P, K nutrients and three levels respectively in this study. The effects of these nutrients and their levels on growth of seedling height and ground diameter of Agathis dammara were studied and the best fertilization method was determined. The results showed that there were high significant differences among different fertilization treatments through 1 - 8 months. The effects of low level N ,P ,K on seedling height and ground diameter of A. dammara were better than high levels. The treatment N1P1K1 namely urea 2.2 grams, fused calcium-magnesium phosphate fertilizer 16.6 grams, potassium chloride 1.7 grams showed the best fertilization and high significant to other treatments. The effect on growth of seedling height and ground diameter of A. dammara was N 〉 P 〉 K.
出处
《广东林业科技》
2009年第5期18-22,共5页
Forestry Science and Technology of Guangdong Province
基金
国家"948"引进项目"南洋杉科优良树种的引进"(99-4-01)内容之一
关键词
贝壳杉苗期N
P
K施肥生长效应
Agathis dammara, seedling stage, N,P,K nutrients, fertilization effect
