摘要
[目的]研究不同施肥模式对香沙芋生长和产量的影响。[方法]针对靖江香沙芋种植过程中严重的连作障碍和当地施肥不合理的问题,利用土壤调理剂对当地施肥方案进行改良,通过连续2年试验探究不同施肥模式对香沙芋生长、产量、病害发生率和淀粉含量的影响。[结果]2种改进施肥方案均可促进香沙芋生长发育,处理Ⅱ使叶龄增加了2.03,还能促进茎粗、株高和叶片厚度的增加;改进施肥方案显著提高了香沙芋产量,其中处理Ⅰ2年增产率分别为16.67%和16.19%,处理Ⅱ为22.17%和19.37%;采用改进施肥方案后,香沙芋的病害发生率显著降低,处理Ⅰ2年防效分别是38.63%和51.60%,处理Ⅱ达到50.75%和62.62%;同时,淀粉含量也得到了显著提高。[结果]该研究为控制香沙芋连作病害提供了技术手段,对促进靖江香沙芋的生产具有重要的指导意义。
[ Objective] To research the effects of different fertilization modes on the growth and yield of Jingjiang taro. [ Method] According to the problems of continuous cropping obstacle and improper fertilization in the process of Jingjiang taro planting, we improved the local fertilization strategy with a soil conditioner, and investigated the effects of different fertilization modes on the growth, yield, disease incidence and starch con- tent of Jingjiang taro by two-year-long experiment. [ Result ] Both two improved fertilization strategies of treatments I and II could promote the growth and development of Jingjiang taro. Treatment ]/increased the leaf age by 2.03, which could promote plant growth by increasing stem di- ameter, plant height and leaf thickness. The improved fertilization strategies significantly enhanced the yield of taro, which increased by 16.67% and 16.19% in the years of 2014 and 2015 in treatment I, respectively. In treatment II, the rate of yield increased by 22.17% and 19.37% in two years, respectively. The disease incidence decreased significantly in two improved fertilizations. Treatment I had effective influence on sup- pressing soil-borne diseases with the control efficacies of 38.63% and 51.60% in two years, respectively. While treatment 1I could reach up to 50.75% and 62.62% , respectively. Furthermore, the starch content of taro was observably enhanced as well. [ Conclusion ] The research provides technological means in controlling continuous cropping diseases, and offers important directions for promoting the production of Jingjiang Taro.
作者
申民翀
李建刚
吴东乾
孙剑霞
李玲
侯金凤
侯迪鸣
董元华
SHEN Min-chong LI Jian-gang WU Dong-qian DONG Yuan-hua et al(Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, Jiangsu 210008 University of Chinese Academy of Sciences, Beijing 100049 Jingjiang Economic Crop Guidance Station, Jingjiang, Jiangsu 214500)
出处
《安徽农业科学》
CAS
2017年第4期25-27,31,共4页
Journal of Anhui Agricultural Sciences
基金
国家重点研发计划(2016YFD0200305)
泰州市农业科技支撑项目(TN201613)
中国科学院南京土壤研究所"一三五"计划和领域前沿项目(ISSASIP1634)
关键词
靖江香沙芋
连作障碍
土壤调理剂
产量
连作病害
Jingjiang taro
Continuous cropping obstacle
Soil conditioner
Yield
Continuous cropping disease
