杉木幼林施肥试验报告

A Experimental Report of Applying Fertilizer to The Young Growth of Chinese Fir.

浙江省遂昌县湖山乡林场杉木林4年施肥试验表明:施用复合肥和钙镁磷肥能明显促进杉木幼林生长。4年生杉木幼林树高生长分别比对照增加66.7％和72.9％,地径生长分别比对照增加98.9％和105.9％;7年生杉木幼林树高生长分别比对照增加74.4％和88.7％,地径生长分别增加69.9％和63.5％.钙镁磷肥对杉木生长具明显后效作用。尿素和氯化钾肥对杉木幼林生长影响不明显。

The experiments of applying fertilizers to Chinese fir young growth were carried out in the Hushan Forest Farm of Suichang County. The results proved that complex fertilizer and calcium magensium phosphate had remarkable effect to the tree growth of young growth. For four years' Chinese fir tree height increment was highter than control plots by 66.7 per cent and72.9 per cent, diameter at ground height increased by 98.9 per cent and 105.9 per cent respectively; for 7 years', tree height increment was highter than control plots by 74.4 per cent and 88.7 per cent, diameter at ground height increased by 69.9 per cent and 63.5 per cent respectively. Calcium magensium phosphate had obvious delayed effect in promoting the growth of Chinese fir. Urea and potassium chloride were not outstanding effect in promoting tree growth of Chinese fir young growth.