中晚熟区主要高粱品种耐瘠性综合评价

张彦,王劲松,董二伟,武爱莲,王媛,焦晓燕

Comprehensive Evaluation of Low-Fertility Tolerance of Different Sorghum Cultivars in Middle-Late-Maturing Area

ZHANG Yan,WANG JinSong,DONG ErWei,WU AiLian,WANG Yuan,JIAO XiaoYan

表6 瘠薄胁迫对不同高粱品种养分积累（kg·hm^-2）的影响

Table 6 Effect of low fertility stress on N, P and K accumulation of grain and shoot above ground (kg·hm^-2) in different sorghum cultivars

性状 Trait	高肥力High soil fertility				低肥力Low soil fertility				均值降低幅度 Decreasing rate (%)
性状 Trait	均值 Mean	变化范围 Variation rang	标准差 SD	CV (%)	均值 Mean	变化范围 Variation range	标准差 SD	CV (%)	均值降低幅度 Decreasing rate (%)
籽粒氮累积量GNA	105.62	80.38—130.50	15.91	15.06	37.49	28.60—47.31	4.98	13.30	63.90
籽粒磷累积量GPA	13.78	8.58—20.80	3.03	22.02	8.27	5.62—10.71	1.39	16.75	39.73
籽粒钾累积量GKA	21.64	15.77—25.97	2.02	9.31	11.41	8.73—14.42	1.49	13.05	46.58
植株氮累积量NAG	159.31	129.03—190.37	20.20	12.68	58.79	47.59—68.65	5.49	9.34	62.45
植株磷累积量PAG	18.64	13.14—25.82	3.45	18.53	10.38	7.91—12.97	1.53	14.77	44.33
植株钾累积量KAG	141.68	105.99—168.50	19.58	13.82	90.65	66.05—123.48	15.75	17.37	35.34