方芳,洪晓玲,刘玲玲,范正文,朱弘
FANG Fang,HONG Xiaoling,LIU Lingling,FAN Zhengwen,ZHU Hong

• 1:台州市林业技术推广总站
• 2:浙江省林业科学研究院

摘要(Abstract)：

探明指数施肥对杂交新美柳（Salix matsudana×alba）幼苗生长及生物量的影响，可为其苗木培育提供基础。以1年生杂交新美柳扦插苗为研究对象，采用盆栽试验法，设置对照（CK）、常规施肥（CF）和指数施肥（EF1、EF2、EF3、EF4）共6个处理，每次施肥间隔时间为30天，共施肥5次，每30天对苗木的苗高、地径进行测量，生长结束后，测定生物量。结果表明：不同施肥处理情况下，杂交新美柳的苗高和地径生长差异表现较大，EF2处理的苗高生长量最大，比CF处理高出36.40%;EF1处理的地径生长量最大，比CF处理高出21.63%。EF处理的生物量显著高于CF和CK，其中EF2处理表现最好，全株生物量、地上部分和地下部分生物量与CK处理相比分别增加了96.86%、84.31%和157.60%。综上，指数施肥3.0 g株~(-1)施氮量和19.99 g株~(-1)多元复合肥是杂交新美柳1年生培育的适宜施肥方式。
To clarify the effects of exponential fertilization on the growth and biomass of hybrid Salix matsudana ×alba seedlings can provide a basis for the seedlings cultivation. Taking the cutting seedlings of one-year-old hybrid S.matsudana × alba as the research object, the pot experiment method was adopted, and six treatments including control(CK), conventional fertilization(CF) and exponential fertilization(EF1, EF2, EF3, EF4) were set up. Each fertilization interval was 30 days and fertilization was applied five times in total. The seedling height and ground diameter of the seedlings were measured every 30 days. After the growth, the biomass was measured. The results showed that under different fertilization treatments, the seedling height and ground diameter growth of S. matsudana × alba were quite different, and the seedling height growth of EF2 treatment was the largest, which was 36.40% higher than that of CF treatment. The ground diameter growth of EF1 treatment was the largest, which was 21.63% higher than that of CF treatment. The biomass of EF treatment was significantly higher than that of CF and CK, and EF2 treatment was the best. Compared with CK treatment, the biomass of whole plant, aboveground part and belowground part increased by96.86%, 84.31% and 157.60%, respectively. In conclusion, the exponential fertilization with nitrogen application rate of3.0 g per plant and multi-component compound fertilizer of 19.99 g per plant were suitable fertilization methods for the cultivation of one-year-old hybrid S. matsudana × alba.

关键词(KeyWords)： 杂交新美柳;指数施肥;苗木培育;生物量
Hybrid Salix matsudana × alba;Exponential fertilization;Seedling cultivation;Biomass

Abstract:

Keywords:

基金项目(Foundation): 浙江省省属科研院所扶持专项（2020F1065-4,2021F1065-6）

作者(Author): 方芳,洪晓玲,刘玲玲,范正文,朱弘
FANG Fang,HONG Xiaoling,LIU Lingling,FAN Zhengwen,ZHU Hong

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