缓释肥对大叶桂樱容器苗生长发育及质量的影响

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

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6.56～10.46g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6.0kg/m3为大叶桂樱2年生容器苗的适宜施肥量。

In order to select the best rate of slow-release seedlings, the influences of different rates of APEX on fertilizer for the growth of Prunus zippeliana container 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〉SRFI〉SRF3. The soluble sugar content of SRF2 and SRF1 were increased by 48.7% and 13.9% when compared with Ct（. The content of total chlorophyll was the lowest in SRF4 treatment and was in the order of SRF2〉CK〉SRFI〉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〉SRFI〉SRF3〉SRF4. Overall morphological, biological and physiological index, the suitable amount was SRF2 that was APEX 6.0 kg/m3.