Abstract:
【Objective】The excessive application of chemical fertilizer in open-field vegetable production leads to environmental pollution and the decline in cabbage yield and quality.In this study,the biological organic fertilizer with different proportion was applied to replace chemical fertilizer with the purpose of exploring effective ways to reduce the amount of chemical fertilizer and improve the quality of cabbage and achieve sustainable production.【Method】Five fertilizing treatments,i.e.,no fertilizer (CK
1),local 100%chemical fertilizer (CK
2),30%reduction of chemical fertilizer+3 000 kg/hm~2 biological organic fertilizer(T
1),30%reduction of chemical fertilizer+6 000 kg/hm~2 biological organic fertilizer (T
2),30%reduction of chemical fertilizer+12 000 kg/hm~2 biological organic fertilizer (T
3),were performed on the basis of randomized block design to study the effect of reducing chemical fertilization and simultaneously applying biological fertilizer on the production,economic performance,quality,nutrient distribution and fertilizer utilization efficiency of cabbage.【Result】Compared with CK
2 treatment,the economic yield of cabbage treated with T
2 increased by 11.10%and the economic benefit increased by 3 583.1 yuan/hm~2 in spring cultivation.T
2 and T
3 treatments decreased the content of nitrate in heading cabbage and increased the content of soluble sugar,soluble protein,and VC.In the spring experiment,the content of soluble protein and vitamin C in T
2 treatment was the highest,which was significantly increased by 51.20%and 17.20%when compared with CK
2;In the autumn experiment,the content of soluble protein and VC in T
3 treatment was the highest,which was significantly increased by 2.2%and 4.40%when compared with CK
2.In the experiment of spring,the fertilizer utilization rate of nitrogen,phosphorus and potassium treated by T
3 increased by 12.40%、1.91%、25.46%respectively compared with CK
2,and promoted the absorption of nitrogen,phosphorus and potassium by heading cabbage leaves.The utilization rates of nitrogen,phosphorus and potassium of T
2 treatment increased by 9.21%,1.22%and 25.02%when compared with CK
2.【Conclusion】The results showed that 30%reduction of chemical fertilizer+6 000 kg/hm~2 bio-organic fertilizer could not only reduce the amount of chemical fertilizer and improve the yield and quality of cabbage,but also could increase economic benefit and the utilization rate of fertilizer.