浙江农林大学学报2018，Vol.35Issue(2)：252-260,9.DOI:10.11833/j.issn.2095-0756.2018.02.008
长期菌渣化肥配施对稻田土壤活性有机碳组分和有效养分的影响
Effects of long-term application of edible fungus residue and chemical fertilizers on fractions of labile organic carbon and available nutrients in rice field soils
摘要
Abstract
To understand how long-term application of edible fungus residue(F)and chemical fertilizers(C) affected soil fertility, nine treatments were established with combinations of three rates of F (0, 50%, and 100%)and three rates of C(0, 50%, and 100%). Each treatment received 3 replicates. The treatment plots were arranged as randominzed blocks design, with plot size of 4 m × 5 m. Fractions of soil labile organic car-bon(LOC1,LOC2,LOC3)and changes of basic soil fertility parameters were examined through a rice field ex-periment(2010-2016). Results showed that compared to a single C application, a combined application of F and C had significant(P<0.05)effect on increasing of the soil carbon pool management index(CPMI),and content of three types of soil LOCs along with their availability(ALCs), rates increase for CPMI by 45.09%, LOCs by 41.77%-53.55%, and ALCs by 11.69%-33.55%. Of the nine treatments, C100F100was the most effec-tive with a CPMI of 204.95;content of LOC1(oxidized by 33 mmol·L-1KMnO4)of 1.73,LOC2(by 167 mmol·L-1KMnO4)of 3.41, and LOC3(by 333 mmol·L-1KMnO4)of 4.37 g·kg-1; and content of ALC1of 14.53%, ALC2of 28.56%,and ALC3of 43.03%.All three LOCs had significant positive correlations with soil total nitro-gen (r1= 0.758**, r2= 0.711** and r3= 0.722** for LOC1, LOC2and LOC3respectively), available nitrogen (r1=0.940**,r2=0.930**and r3=0.726**for LOC1,LOC2and LOC3respectively), available phosphorus(r1=0.781, r2= 0.802 and r3= 0.784 for LOC1, LOC2and LOC3respectively), available potassium(r1= 0.674, r2=0.707 and r3=0.440 for LOC1, LOC2and LOC3respectively), and soil organic carbon(r1= 0.827, r2= 0.774 and r3= 0.637 for LOC1, LOC2and LOC3respectively). Therefore, LOC1had most close correlations with SOC and soil fertility changes.Soil LOC was mainly determined by F application; whereas, C was the main nutrient sup-plier. Consequently, a proper combined application of F and C was favorable to improve soil fertility and rice yield with C50F50the best treatment in this study.关键词
土壤肥料学/菌渣还田/活性有机碳组分/土壤有效养分/水稻产量Key words
soil fertilizer science/fungus residue return/fractions of soil labile organic carbon/soil available nutrients/rice yield分类
农业科技引用本文复制引用
龚臣,王旭东,倪幸,乐天天,曾诗媛,叶正钱..长期菌渣化肥配施对稻田土壤活性有机碳组分和有效养分的影响[J].浙江农林大学学报,2018,35(2):252-260,9.基金项目
浙江省自然科学基金资助项目(LY16D010010) （LY16D010010）
国家自然科学基金资助项目(31601271) （31601271）
