农业现代化研究2024，Vol.45Issue(5)：897-906,10.DOI:10.13872/j.1000-0275.2024.1569
有机物料颗粒化高量深施对旱稻产量和剖面土壤肥力的影响
Effects of high dosage of pelletized organic materials deep application on upland rice yield and profile soil fertility
摘要
Abstract
To solve the problems such as the difficulty of a large amount of straw returning and the slow improvement of soil fertility in barren paddy fields.Two treatments including constant application of organic fertilizer(CK:10 t/hm2)and high dosage of pelletized organic materials deep application(POF:40 t/hm2)were set up to study the effect of enhanced inputs of organic fertilizers(2 years)on the yield of upland rice and profile soil fertility.The results showed that high dosage of pelletized organic amendment significantly increased upland rice yield(P<0.01),with a 24.1%increase observed in POF compared with CK.Soil bulk density increased significantly with soil depth in both CK and POF treatments.However,high dosage of pelletized organic materials deep application only improved the soil structure in the 0～20 cm,with a nonsignificant difference in other profile soils(P>0.05).Soil organic carbon and microbial biomass decreased significantly with soil depth.Compared with CK,POF treatment only increased the contents of organic carbon content and microbial biomass in the 10～20 cm,but there was no significant difference in other profile soils(P>0.05).Soil organic carbon,microbial biomass carbon and nitrogen in POF treatment increased by 28.2%,70.8%and 76.1%in 10～20 cm compared with the CK,respectively.All the three soil enzyme activities including cellobiohydrolase,β-glucosidase and N-acetylglucosaminidase in the 10～20 cm increased the most than other profile soils.The random forest model analyses indicated that soil total nitrogen and cellobiohydrolase activity as key factors influencing soil organic carbon with the contributions of 10.7%and 10.0%in total soil factors,respectively.High dosage of pelletized organic materials deep application had good effects on the depth of soil ploughing layer,soil fertility and rice yields by improving profile soil structure,microbial biomass and enzyme activities in the barren paddy fields.关键词
有机物料颗粒化/深施/剖面土壤肥力/土壤有机碳/旱稻Key words
pelletized organic materials/deep application/profile soil fertility/soil organic carbon/upland rice分类
农业科技引用本文复制引用
李露,高威,周建利,郭晓彬,李颜,陈香碧,吴金水..有机物料颗粒化高量深施对旱稻产量和剖面土壤肥力的影响[J].农业现代化研究,2024,45(5):897-906,10.基金项目
国家重点研发计划项目(2021YFD1901203) （2021YFD1901203）
国家自然科学基金项目(42107366,42130716).Supported by the National Key Research and Development Program of China(2021YFD1901203) （42107366,42130716）
National Natural Science Foundation of China(42107366,42130716). （42107366,42130716）
