Crops ›› 2017, Vol. 33 ›› Issue (2): 98-103.doi: 10.16035/j.issn.1001-7283.2017.02.017

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Effects of Bio-organic Fertilizer on Physiological Characters and Yield of Maize in Saline-Alkali Soil

Liu Yan1,Li Bo1,Sun Wentao1,Yu Yang2   

  1. 1 Institute of Plant Nutrition and Environmental Resources,Liaoning Academy of Agricultural Sciences,Shenyang 110161,China
    2 Jilin Tobacco Companies Changchun Company,Changchun 130000,Jilin,China
  • Received:2016-12-03 Revised:2017-02-17 Online:2017-04-15 Published:2018-08-26
  • Contact: Wentao Sun

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Abstract:

Pot experiment was carried out to study the effects of bio-organic fertilizer on physiological characters and yield of maize. The results showed that applying bio-organic fertilizer could improve SOD、POD and CAT activities under different salinity stress, The treatment T3 with 1% organic fertilizer on low,medium salinity stress was significantly higher than CK. At filling stage, the net photosynthetic rate (Pn) was also the highest, which reached 32.7, 30.6, 26.9μmol/(m2·s), respectively in the low, medium and high saline-alkali soils. The maize grain yields under T3 treatments increased significantly by 14.3%-24.9% compared with that of CK indicating that applying bio-organic fertilizer could enhance the salt resistance and grain yields of maize.

Key words: Bio-organic fertilizer, Maize, Saline-alkali Soil, Physiological characters, Yield

Table 1

The basic physical and chemical properties of soil"

土壤类型Soil type H M L
全盐量Total salt (%) 0.354 0.212 0.135
电导率Conductivity (μs/cm) 1 025 620 400
pH 8.6 8.3 8.2
全氮Total N (%) 0.056 0.103 0.145
有机质Organic matter (g/kg) 0.75 1.70 2.69
碱解氮Available N (mg/kg) 72 85 137
速效磷Available P (mg/kg) 7.46 10.96 11.24
速效钾Available K (mg/kg) 162 109 149

Fig.1

The effects of bio-organic fertilizer on SOD activity of ear leaf in spring maize H, M and L indicate high, medium and low saline soil, respectively; Different letters indicate significant differences (P < 0.05), the same below"

Fig.2

The effects of bio-organic fertilizer on POD activity of ear leaf in spring maize"

Fig.3

The effects of bio-organic fertilizer on CAT activity of ear leaf in spring maize"

Fig.4

The effects of bio-organic fertilizer on MDA content of ear leaf in spring maize"

Table 2

The effects of bio-organic fertilizer on photosynthetic characteristics of spring maize"

处理
Treatment		 L M H
Pn[μmol/m2·s] Gs[mol/m2·s] Pn[μmol/m2·s] Gs[mol/m2·s] Pn[μmol/m2·s] Gs[mol/m2·s]
CK 26.5±0.1b 0.18±0.2b 23.2±0.2b 0.15±0.8b 17.4±0.7b 0.09±0.7b
T1 27.6±3.6b 0.14±1.1b 25.4±1.4ab 0.16±1.5b 20.7±0.1ab 0.12±1.3b
T2 31.8±3.3a 0.28±0.9a 28.5±0.7a 0.22±0.4ab 23.8±3.8ab 0.16±1.1b
T3 32.7±0.2a 0.32±0.5a 30.6±1.4a 0.29±0.9a 26.9±2.0a 0.22±0.3a

"

处理
Treatment		 L M H
产量
Yield		 生物量
Dry matter		 产量
Yield		 生物量
Dry matter		 产量
Yield		 生物量
Dry matter
CK 150.0b 314.0c 140.0b 240.0c 76.7b 146.7c
T1 151.8b 355.7b 148.3b 290.3b 95.0a 171.0bc
T2 156.7b 388.7b 158.3ab 292.3b 99.3a 209.3ab
T3 177.2a 428.7a 163.3a 305.3a 102.1a 246.3a
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