豫西黄土丘陵区仁用杏叶片及果实生长发育规律

Growth-development Law of Almond-apricot's Leaves And Fruit in the Loess Hilly Area of West Henan Province

为了解仁用杏在河南省豫西黄土丘陵区的生长发育规律,并为仁用杏的栽培提供参考,选择"超仁"为研究对象,对仁用杏的叶片及果实生长发育动态进行调查研究,并对其生长曲线进行了拟合,结果表明:叶片长、宽均有2个生长高峰,分别同时出现在4月7日和4月23日,叶片长、宽的生长曲线分别为:Y长=1.219936+0.355524 t+0.009224 t2-0.000657 t3,R2=0.996;Y宽=0.645753+0.3394784 t+0.002657 t2-0.000376 t3,R2=0.9958.叶面积有4个生长高峰,分别出现在4月7日、4月17日、4月23日和4月27日,叶片的持续增长时间为47天,叶面积生长曲线为:Y面积=0.651282-0.58078 t+0.220554 t2-0.005732 t3,R2=0.9832.果实纵、横径的生长发育可分为两个时期,即果实迅速生长期——膨大期历时30 d,果实缓慢生长期——硬核期历时60 d,纵横径的生长曲线分别为:Y纵=0.505135+0.770411 t-0.07188 t2+0.002195 t3,R2=0.9948;Y横=0.78861+0.633315 t-0.049635 t2+0.001346 t3,R2=0.9931.

In order to investigate the growth-development law of Almond-apricot in the Loess Hilly Area of West Henan Province as a reference for Almond-apricot＇s cultivation, taking＂Chaoren＂as the research object, dynamic growth of Almond-apricot＇s leaves and fruit were researched, and growth curve were fitted. The results indicated that the length and width of leaf both have two growth peak who appeared simultaneously in the April 7 and April 23 respectively, and their growth curve were Ylength= 1. 219 936 ＋ 0.355 524t＋0.009 224t^2- 0. 000657t^3,R^2=0. 996;Ywidth= 0.645 753＋0. 3394784t＋0. 002 657t^2-0. 000376ta,R^2=0.9958. The leaf area have four growth peak,which appeared respectively in the April 7, April 17, April 23 and April 27, and the growth duration of leaf was forty-seven days,its growth curve was Yares=0. 651 282-0. 580 78t＋0. 220 554 t^2-0. 005 732 t^3,R^2=0. 983 2. The growth and development of the vertical and horizontal diameters of fruit can be divided into two periods, the fast growth period of fruit who last one month, the slow growth period of fruit who last two month, and their growth curve were Yv = 0. 505 135 ＋ 0.770 411 t-0. 071 88 t^2＋0. 002 195 t^3,R^2=0. 994 8,Yh=0. 788 61＋0.633 315 t-0.049 635 t^2＋0.001 346 t^3,R^2=0. 993 1.