有机物料组合肥还田对耕地质量及甜菜品质和效益的影响

在甘肃省张掖市甘州区明永乡甜菜种植基地上,采用田间试验方法,连续3a进行了有机物料组合肥还田对耕地质量及甜菜品质和效益影响的研究.结果表明:羊粪+改性糠醛渣+葵花籽饼组合肥有利于提高土壤的总孔隙度、>0.25 mm团聚体、持水量和CEC,降低容重、pH值和全盐含量,与传统化肥比较,土壤总孔隙度和>0.25 mm团聚体分...

Effects of combined organic materials on quality and benefit of cultivated land and sugar beet

In the beet planting base of Mingyong Township, Ganzhou District, Zhangye City, Gansu Province, the effect of different combined organic materials returning to the field on cultivated land quality and beet quality and benefit was studied by field experiment for 3 consecutive years. The results showed that sheep manure + modified furfural residue + sunflower seed cake group increased the soil total porosity, >0.25mm aggregate, water holding capacity and CEC, and decreased the bulk density, pH value and total salt content. This group increased the soil total porosity and >0.25mm aggregate by 5.28% and 4.24%, respectively, compared with traditional chemical fertilizers. Total water holding capacity and CEC increased by 11.76% and 23.53%, respectively. The bulk density, pH value and total salt content decreased by 9.59%, 9.17% and 7.86%, respectively. Compared with traditional chemical fertilizer, chicken manure + edible fungus residue + rapeseed cake group improved soil organic matter content, enzyme activity, available nitrogen, phosphorus and potassium content, beet fresh root yield, sugar content and fertilizer profit. Soil organic matter content, sucrase activity, urease activity, phosphatase activity and polyphenol oxidase activity were increased by 16.69%, 16.78%, 30.36%, 27.14% and 19.23%, respectively. The content of alkali\|hydrolyzed nitrogen, available phosphorus and available potassium increased by 10.78%, 12.03% and 7.77%, respectively. The yield of fresh root, sugar content and fertilization profit increased by 5.94%, 2.07% and 0.23 million Yuan ·hm^-2, respectively.