Effects of Dazomet Fumigation and Seaweed Biologic Fertilizer on the Malus hupehensis Seedlings and Soil Microbial Quantity Under Replant Conditions

doi:10.16420/j.issn.0513-353x.2016-0089

ACTA HORTICULTURAE SINICA ›› 2016, Vol. 43 ›› Issue (10): 1995-2003.doi: 10.16420/j.issn.0513-353x.2016-0089

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Effects of Dazomet Fumigation and Seaweed Biologic Fertilizer on the Malus hupehensis Seedlings and Soil Microbial Quantity Under Replant Conditions

LIU Chao，XIANG Li，WANG Sen，CHEN Xue-sen，SHEN Xiang，YIN Cheng-miao*，and MAO Zhi-quan*

（College of Horticulture Science and Engineering，Shandong Agricultural University，State Key Laboratory of Crop Biology，Tai’an，Shandong 271018，China）

Online:2016-10-25 Published:2016-10-25

Abstract

Abstract:

To clarify the effects of soil fumigation with dazomet（3,5-dimethyl-1,3,5-thiadiazinane- 2-thione）and seaweed biologic fertilizer on the young apple（Malus hupehensis Rehd.）seedlings biomass and soil microbial quantity under replant conditions. The results showed that compared with the control，dazomet fumigation and seaweed biologic fertilizer all increased the apple seedlings biomass，the effect of the combination was best. Compared with the control，dazomet fumigation，seaweed biologic fertilizer and the combination improved the activities of CAT，POD and SOD in root of the apple seedlings，the effect of the combination was more obvious. Compared with the control，the combination improved total root length，surface area，volume and tips of apple seedlings. Seaweed biologic fertilizer significantly increased the number of bacteria and fungi in the soil than the control，respectively. The combination increased

the number of bacteria and the ratio of bacteria and fungi in the soil. The combination of dazoment fumigation and seaweed biologic fertilizer could more effectively reduce the apple replant disease.

Key words: Malus hupehensis, replant disease, dazomet, seaweed biologic fertilizer, bacteria；fungi

CLC Number:

S 661.1

LIU Chao，XIANG Li，WANG Sen，CHEN Xue-sen，SHEN Xiang，YIN Cheng-miao*，and MAO Zhi-quan*. Effects of Dazomet Fumigation and Seaweed Biologic Fertilizer on the Malus hupehensis Seedlings and Soil Microbial Quantity Under Replant Conditions[J]. ACTA HORTICULTURAE SINICA, 2016, 43(10): 1995-2003.

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Effects of Dazomet Fumigation and Seaweed Biologic Fertilizer on the Malus hupehensis Seedlings and Soil Microbial Quantity Under Replant Conditions

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