粮草间作培肥处理对黑土土壤有机碳含量的影响

发布时间：2019-04-03 20:01

【摘要】：主要探讨粮草间作和培肥条件对黑土土壤有机碳、水溶性有机碳、微生物量碳、颗粒态有机碳、易氧化有机碳含量的影响。结果表明,草木樨+化肥处理土壤有机碳含量最高,是CK的1.23倍,草木樨+半量化肥处理土壤有机碳含量是CK的1.07倍;草木樨+化肥处理土壤水溶性碳、土壤微生物量碳、颗粒态有机碳、易氧化有机碳含量分别是CK的1.08、1.13、1.11、1.03倍;草木樨+1/2化肥土壤有机碳、微生物量碳含量分别是CK的1.07、1.02倍,在土壤水溶性碳、颗粒态有机碳和易氧化有机碳含量上与CK差异不显著;草木樨+不施化肥处理土壤有机碳、水溶性有机碳、微生物量碳、颗粒态有机碳、易氧化有机碳含量分别是CK的87%、85%、81%、91%、87%。可见,粮草间作的方式可以有效地提高土壤中有机碳的含量,从而为固碳减排、增加土壤碳库、寻找最佳种植和培肥土壤方式、减量施肥生产、健康安全食品和有机农业的发展提供了科学依据。
[Abstract]:The effects of grain-grass intercropping and fertilization on organic carbon, water-soluble organic carbon, microbial biomass carbon, granular organic carbon and easily oxidized organic carbon in black soil were studied. The results showed that the soil organic carbon content of sweet clover treated with chemical fertilizer was the highest, which was 1.23 times of CK, and the content of soil organic carbon of sweet clover treated with half amount of chemical fertilizer was 1.07 times higher than that of CK. The contents of water-soluble carbon, soil microbial biomass carbon, granular organic carbon and easily oxidized organic carbon were 1.08, 1.13, 1.11 and 1.03 times higher than those of CK by chemical fertilizer treatment of Melilotus clover. The contents of soil organic carbon and microbial biomass carbon were 1.07 and 1.02 times higher than those of CK, respectively. There was no significant difference in the contents of water-soluble carbon, granular organic carbon and easily oxidized organic carbon between soil and CK. The contents of soil organic carbon, water soluble organic carbon, microbial biomass carbon, granular organic carbon and easily oxidized organic carbon were 87%, 85%, 81%, 91%, 87% of CK, respectively. It can be seen that the intercropping of grain and grass can effectively increase the content of organic carbon in soil, thereby reducing carbon sequestration, increasing soil carbon pool, finding the best way of planting and fertilizing soil, and reducing the production of fertilization. The development of healthy and safe food and organic agriculture provides scientific basis.
【作者单位】：东北农业大学;
【基金】：黑龙江省博士后科研启动金(编号:LBH-Q13020)
【分类号】：S153.6

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