水分亏缺下化肥减量配施有机肥对棉花光合特性与产量的影响

冯克云, 王宁, 南宏宇, 高建刚

Effects of chemical fertilizer reduction with organic fertilizer application under water deficit on photosynthetic characteristics and yield of cotton

FENG Ke-Yun, WANG Ning, NAN Hong-Yu, GAO Jian-Gang

图2 不同灌溉量和施肥处理对棉花叶面积指数的影响 不同字母表示同一生育期不同施肥处理差异显著(P < 0.05)。FS: 盛蕾期; FF: 盛花期; EFB: 盛铃前期; FB: 盛铃期; LFB: 盛铃后期; BO: 吐絮期。CK: 不施肥; CF: 单施化肥; M1: 75%化肥+25%有机肥; M2: 50%化肥+50%有机肥; M3: 25%化肥+75%有机肥。W1: 充分灌溉4800 m3 hm-2; W2: 亏缺灌溉2400 m3 hm-2。

Fig. 2 Effects of different irrigation and fertilizer treatments on leaf area index of cotton Different letters in the same stage mean significant difference among different fertilizer treatments at P < 0.05. FS: full squaring stage; FF: full flowering stage; EFB: early stage of full boll; FB: full boll stage; LFB: later full boll stage; BO: boll opening stage. CK: no fertilizer; CF: single application of chemical fertilizer; M1: 75% chemical fertilizer + 25% organic fertilizer; M2: 50% chemical fertilizer + 50% organic fertilizer; M3: 25% chemical fertilizer + 75% organic fertilizer. W1: full irrigation with irrigation amount was 4800 m3 hm-2; W2: deficit irrigation with irrigation amount was 2400 m3 hm-2.