Meta-analysis results on the wheat yields for five mulching practices, three rainfalls and four regions using the fixed or random-effects models.
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Notes: FM: flat mulching; RFM: ridge–furrow mulching; WSM: wheat straw mulching; MTMC: mulching with two materials combined; MOM: mulching with other materials. K: the number of observations involved in each of the analysis levels including conventional tillage (CT). Several individual studies were excluded because their heterogeneities could not be eliminated. * P < 0.05; ** P < 0.01. Meta-analysis results on the wheat yields for five mulching practices, three rainfalls and four regions using the fixed or random-effects models.
创建时间:
2015-05-28



