冷凉地区云南红豆杉人工幼林丰产栽培技术研究

冷凉地区云南红豆杉人工幼林生长缓慢。利用1a生云南红豆杉苗作为实验材料，进行3种有机肥施肥效应实验、腐殖土施肥量梯度实验、林粮间作实验。4年的实验结果表明，采用羊圈肥、猪圈肥、腐殖土3种有机肥料，腐殖土肥效明显，以腐殖土作底肥可使云南红豆杉幼树的生物量增长量达到最高。腐殖土施肥量梯度实验效应：采用1．5kg／株的腐殖土作底肥更有利于促进云南红豆杉幼树的生长。林粮间作实验效应为：分季节采用黄豆、蚕豆与云南红豆杉隔行间作的林粮间作模式更有利于云南红豆杉幼树生物量的增长。

Research on Cultivation Technology of Young Plantation of Taxus Yunnanensis in Cold Area

The young plantation of Taxus Yunnanensis grows slowly in cold area. Taking annual Taxus Yunnanensis as experimental material, experiments have been conducted including using three different kinds of organic fertilizer experiment, humus fertilizer amount gradient experiment and forest crop inter- cropping experiment. Results after four years showed among three kinds of organic fertilizer, sheep fertil- izer, pig fertilizer and humus soil, the effects of humus soil was significant, and by using humus soil as base, the biomass of young Taxus Yunnanensis reached to the highest. Humus soil fertilizer gradient ex- periment showed that using 1.5 kg/per Humus soil as base was more conducive to promoting the growth of young Taxus Yunnanensis. The forest crop intercropping trials showed that modes of sub-season use of soy, beans intercropped with Taxus were more conducive to promoting the biomass of Taxus Yunnanensis.