豆饼和磷钾肥对长筒石蒜生长的影响

摘要

A furrow fertilizer application method was carried out, in which bulb of Lycoris longituba was planted on the top of casing soil over the applied fertilizer, soybean meal fertilizer at the bottom and superphosphate and potassium chloride fertilizer on the upper layer, to study the fertilizing effects of different usages of soybean meal and chemical fertilizer on the leaf growth and bulb biomass. Results showed that relative leaf biomass decreased with the fertilization amount at the late stage of the first growth season. The fertilization did not significantly increase average leaf count, leaf length and bulb biomass in the following 2 years. Bulb of L. longituba grew slowly, and the average annual compound growth rate of fresh bulb weight was only about 41%. It is suggested that relative fertile soil be selected to plant Lycoris longituba, and the principal of multiple and light fertilizations were suggested to follow.%试验采用先施豆饼肥、上面施化肥后覆土，再在上面种植鳞茎的沟施方法，探讨不同用量的豆饼肥和化肥(过磷酸钙+氯化钾)对长筒石蒜生长的影响。结果表明：施肥未显著增加叶生长量和鳞茎生物量。施肥后首季表现出用量越多叶量越小的趋势，表现出施肥的负面效应，但随后年份负面影响减小。长筒石蒜生长缓慢，鳞茎鲜重平均年复合增长率仅41%。建议选择相对肥沃的土壤种植，施肥则宜多次薄施。