Organic substitution by pig manure combined with straw maintained reasonable content of soil available nutrients without productivity losses in autumn Chinese cabbage-spring pepper rotation system

文献类型： 外文期刊

第一作者： Xu, Meng

作者： Xu, Meng;Tang, Jiwei;Huang, Shaowen;Ai, Chao

作者机构：

关键词： Fertilization; Pig manure; Straw; Soil available nutrient; Shoot nutrient uptake; Vegetable production

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：4.2； 五年影响因子：4.6 ）

ISSN： 0304-4238

年卷期： 2024 年 338 卷

页码：

收录情况： SCI

摘要： Sustainable fertilization practices have been explored using both inorganic and organic nutrient sources. Replacing half of the inorganic nitrogen fertilizer with organic fertilizer still resulted in excess accumulation of available soil nutrients under continuous vegetable planting. In addition to substituting chemical fertilizer with pig manure (50 % pig manure+50 % chemical fertilizer, PMF) at a 50 % nitrogen rate, another treatment was added where pig manure was substituted with cereal straw (25 % straw+25 % pig manure+50 % chemical fertilizer, SMF) at a 25 % nitrogen rate. The agronomic and economic effects were compared with the fertilization solely with total chemical fertilizer (100 % chemical fertilizer, TCF) for a seven-year autumn Chinese cabbage-spring pepper rotation. Regardless of the crop, year, and key productivity parameters, the PMF treatment fully achieved half the fertilizer replacement values. In the spring pepper season, the marketable fresh yield, shoot biomass, gross output, and profits are significantly higher for the PMF treatment compared to the SMF and TCF treatments. Compared with the TCF treatment, the rapidly increasing NO3--N content was reduced under the PMF treatment, but the available phosphorus and potassium contents excessively accumulated to >300 mg kg(-1) each in the soil. The available soil phosphorus and potassium increased and remained within a reasonable range without a loss of rotation productivity with the SMF treatment. The long-term study with optimized fertilization regimes revealed the basic laws of nutrient accumulation in soil and plants. The findings will be important in the use of combined fertilizer sources for vegetable production.

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