缓释肥对大叶桂樱容器苗生长发育及质量的影响

为了筛选适合大叶桂樱(Prunus zippeliana)容器苗生长的缓释肥用量，以大叶桂樱2年生容器苗为材料，在基质中加入不同浓度APEX缓释肥，研究不同施肥量对大叶桂樱的形态指标、生物量及生理指标的影响。结果表明，各处理的苗高SRF4>SRF2>SRF3>SRF1；地径差异显著，SRF2>SRF4>SRF3，最小的是SRF1处理。地上鲜重SRF2>SRF4>CK>SRF3，地下鲜重无明显差异，在6.56~10.46 g之间，地上干重SRF2>SRF4>SRF3>CK，地下干重SRF2>SRF4>SRF1>SRF3。SRF2和SRF1的可溶性糖含量比CK分别增加48.7%和13.9%。叶绿素总含量最小的是SRF4，SRF2>CK>SRF1>SRF3。各组根系活力差异显著，以SRF2处理根系活力最大，比CK增加73.9%。缓释肥组的可溶性蛋白质含量均小于CK，SRF2>SRF1>SRF3>SRF4。综合形态指标、生物量及生理指标来看，SRF2即APEX缓释肥6.0 kg/m3为大叶桂樱2年生容器苗的适宜施肥量。

The Effects of Slow-release Fertilizer on Growth and Quality of Prunus zippeliana

In order to select the best rate of slow-release fertilizer for the growth of Prunus zippeliana container seedlings, the influences of different rates of APEX on morphological, biological and physiological effects of 2-year Prunus zippeliana container seedlings were studied by adding different rates of APEX into the matrix. The height was in the order of SRF4>SRF2>SRF3>SRF1. There was no significant difference between basal diameter and it was in the order of SRF2>SRF4>SRF3. The shoot part fresh weight was in the order of SRF2>SRF4>CK>SRF3. The root part fresh weights were not significantly different which were between 6.56 g and 10.46 g. Shoot part dry weight was in the order of SRF2>SRF4>SRF3>CK while root part dry weight was SRF2>SRF4>SRF1>SRF3. The soluble sugar content of SRF2 and SRF1 were increased by 48.7% and 13.9% when compared with CK. The content of total chlorophyll was the lowest in SRF4 treatment and was in the order of SRF2>CK>SRF1>SRF3. There were significances between root activity of the treatments. The highest was in SRF2 treatment and was increased by 73.9% compared with CK treatment. The soluble protein content was in the order of CK>SRF2>SRF1>SRF3>SRF4. Overall morphological, biological and physiological index, the suitable amount was SRF2 that was APEX 6.0 kg/m3.