Effects of organic substance composting inoculants under straw returning on wheat yield and soil chemical characteristics

doi:10.16178/j.issn.0528-9017.20230979

Abstract

Abstract:

In this study, three treatments were set up: straw not returning (CK), straw returning (T1) and straw returning with organic substance composting inoculants (T2), and the effects of organic substance composting inoculants on wheat yield, soil alkaline hydrolyzable nitrogen, available phosphorus, available potassium content, soil enzyme activity and microbial number under the condition of straw returning were investigated through field experiments. The results showed that there was no significant difference in the number of panicle and grains per panicle between treatments, but the application of organic substance composting inoculants significantly increased the 1 000-grain weight of wheat. Compared with CK, T2 treatment significantly increased the number of soil bacteria and decreased the number of fungi. Under the condition of straw returning to the field, the activities of neutral phosphoconvertase, sucrase and catalase in the soil were significantly increased under the application of organic substance composting inoculants. The contents of available phosphorus, available potassium, total nitrogen, organic matter and organic carbon increased significantly after the application of organic substance composting inoculants. The above results showed that under the condition of straw returning to the field, organic substance composting inoculants accelerated the decomposition rate of straw in the soil, increased the number of soil microorganisms and soil enzyme activities, promoted the dissociation of mineral nutrients in the soil, increased the content of available mineral nutrients in the soil, improved the rhizosphere soil environment of wheat, and promoted the growth of wheat.

Key words: straw returning, organic substance composting inoculants, soil nutrients, enzyme activity, soil microorganism

CLC Number:

S512.1

GUO Xinsong, LIU Tongxin, HONG Pizheng, GAO Han, JING Jiyue, DING Fangjun. Effects of organic substance composting inoculants under straw returning on wheat yield and soil chemical characteristics[J]. Journal of Zhejiang Agricultural Sciences, 2025, 66(1): 44-50.

Figures/Tables 6

References 32

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处理	试验处理
CK	秸秆不还田+667 m²复合肥40 kg
T1	秸秆自然还田+667 m²复合肥40 kg
T2	秸秆还田+667 m²腐熟剂5 kg+667 m²复合肥40 kg

处理	试验处理
CK	秸秆不还田+667 m²复合肥40 kg
T1	秸秆自然还田+667 m²复合肥40 kg
T2	秸秆还田+667 m²腐熟剂5 kg+667 m²复合肥40 kg

处理	667 m²穗数/万	穗粒数	千粒重/g	667 m²理论产量/kg
CK	32.86±1.17 a	23.32±0.57 a	40.11±0.23 b	307.74±16.96 a
T1	34.59±2.91 a	24.42±0.58 a	42.61±1.24 ab	360.16±35.82 a
T2	32.54±2.88 a	24.08±1.14 a	44.32±0.61 a	345.44±22.70 a

处理	667 m²穗数/万	穗粒数	千粒重/g	667 m²理论产量/kg
CK	32.86±1.17 a	23.32±0.57 a	40.11±0.23 b	307.74±16.96 a
T1	34.59±2.91 a	24.42±0.58 a	42.61±1.24 ab	360.16±35.82 a
T2	32.54±2.88 a	24.08±1.14 a	44.32±0.61 a	345.44±22.70 a