Response of Different Fertilizing on Growth and Soil Environment of Sorghum

doi:10.7668/hbnxb.2017.02.032

Abstract

Abstract: In this research,a field orientation experiment on sorghum-maize rotation was conducted.The effects of different fertilization conditions on the growth,nutrient,soil enzyme activity and microbial activity of sorghum was studied.The experimental results showed that different fertilizer could significantly increase the jointing stage of sorghum plant height,stem diameter,number of pieces and index pages visible leaf area,as well as sorghum yield and grain weight per spike (P<0.05).Each processing production order of IF+M+S > IF+M > M+S > IF > CK,compared to the control,the range of yield increase of sorghum in different fertilization levels were 80.6%-120.7%,respectively,reaching a significant level,and among which IF+M+S treatment was the best.All values of inorganic fertilizer treatments were slightly higher than that of no fertilization treatment. The organic fertilizer treatment increased the soil nutrients and organic matter content of sorghum, compared with the inorganic fertilizer treatment. The total N, available P, available K, organic matter of IF+M+S treatment were 1.95, 10.36, 2.01, 1.83 times of CK, respectively (P<0.05). Soil enzyme activity of fertilization treatments in different growth periods was higher than no fertilization (CK),in which the most was the treatment of IF+M+S,activity of alkaline phosphatase in jointing stage and harvest stage,urease in harvest stage,invertase in jointing stage,flowering stage and harvest stage were all significantly higher than that of inorganic fertilizer treatment (P<0.05).The application of organic fertilizer or application combined with inorganic fertilizer could improve the soil microbial community functional diversity and the capability of utilizing carbon sources.And the treatments containing organic fertilizer and straw manure were more conducive to improve soil microbial diversity than other organic fertilizer treatments.

Key words: Fertilization, Sorghum, Yield, Soil enzyme, Soil microbes, Soil nutrient

CLC Number:

S514
S143

DONG Erwei, WANG Cheng, DING Yuchuan, WANG Jinsong, WU Ailian, WANG Lige, JIAO Xiaoyan. Response of Different Fertilizing on Growth and Soil Environment of Sorghum[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2017, 32(2): 217-225. doi: 10.7668/hbnxb.2017.02.032.

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