紫荆实生苗株高生长规律研究  

Research on Height Growth of Chinese redbud Seedling

作　　者：李颖飞[1] 杜彩侠[1] 燕瑞勤[1] 胡平均[1] 马西宁[1] 

机构地区：[1]陕西省户县森林资源管理中心,陕西户县710300

出　　处：《现代农业科技》2016年第10期123-124,129,共3页Modern Agricultural Science and Technology

摘　　要：采用定期观测和测定苗木高生长量的方法研究了一年生紫荆实生苗生长发育规律。结果表明:紫荆苗高的生长期约204 d,其生长规律符合"S"型生长曲线,可用Logistic方程来拟合。建立了Y=90.199/[1+311.380exp(-0.046 t]生长模型。根据该模型,可把紫荆实生苗生长期划分为4个阶段,即出苗期(3月24日至5月4日)、生长初期(5月5日至6月27日)、速生期(6月28日至8月22日)和生长后期(8月23日至10月12日),其中速生期的生长量占整个生长量的62.00%,以为紫荆的苗期肥水管理提供参考依据。One-year-old Chinese redbud seedling growth laws were studied by regular observation and measurement.The results showed that height growth period of Chinese redbud seedling was about 206 d, its growth rule was in ＂S＂ type growth curve which was available to fit the Logistic equation Y--90.199/[1＋311.380exp （-0.046 t）].According to the model, growth period could be divided into four stages：the seedling stage （24th March to 4th May） ,early growth stage （Sth May to 27th June） ,rapid growth stage （28th June to 22th August） and late growth stage （23th August to 12th October）.The rapid growth stage accounted for 62.00% of the whole growth period, so should strengthen the water and fertilizer management.lt could provide a reference for scientific Chinese redbud seedling stage management.

关 键 词：紫荆 实生苗苗高 年生长规律 LOGISTIC方程 

分 类 号：S685.99[农业科学—观赏园艺]