土培条件下玉米萌发期耐旱鉴评技术体系研究

张春宵,李淑芳,刘旭洋,刘杰,刘文平,刘学岩,李春辉,王天宇,李晓辉

Establishment of Evaluation System for Drought Tolerance at Maize Germination Stage Under Soil Stress

ZHANG ChunXiao,LI ShuFang,LIU XuYang,LIU Jie,LIU WenPing,LIU XueYan,LI ChunHui,WANG TianYu,LI XiaoHui

表2 5份玉米品种在不同土壤含水量下的发芽率拟合Logistic方程

Table 2 Logistic equations of germination rate and soil water contents in five maize hybrids

品种名称 Hybrids	回归方程 Logistic equations	拟合度 Fitting degree (R²)	50%种子萌发率时的土壤含水量 GW₅₀ (%)
郑单958 Zhengdan 958	Y=103.048/(1+1.10×10¹⁵e^-1.874^X)	0.983	18.5
吉农大819 Jinongda 819	Y=107.042/(1+1.99×10¹²e^-1.505^X)	0.981	18.7
登海605 Denghai 605	Y=103.907/(1+1.04×10¹³e^-1.642^X)	0.978	18.2
吉单551 Jidan 551	Y=105.640/(1+4.28×10¹²e^-1.554^X)	0.992	18.7
优迪919 Youdi 919	Y=105.599/(1+1.11×10¹²e^-1.485^X)	0.985	18.6