Effect of organic fertilizer instead of partial chemical fertilizer on rice yield and soil physicochemical properties
In order to investigate the effect of organic fertilizer partially instead of chemical fertilizer on rice production and soil fertility level,and to promote the reduction of chemical fertilizer application and its efficiency in rice production.In this study,no fertilization(CK1)and conventional fertilization(CK2)were used as controls and two experimental treatments,namely organic combined application instead of 15%(T1)and 30%(T2)chemical nitrogen fertilizer were set up,relevant experiment was conducted on rice during the summer and autumn season of 2023 in field.Yield and quality of early and late rice,soil physicochemical properties,mineral elements and other nutrient levels were different.The yield and quality of rice,soil physicochemical properties,and mineral elements levels were investigated.Compared with CK2,the yield of early season and late season rice under T1 and T2 treatments increased by 5.03%-10.13%and 6.17%-12.96%,respectively.No significant change trend was found in rice processing and appearance quality indexes between treatments with conventional fertilization.The soil pH value,alkali-hydrolyzed nitrogen,available phosphorus and available potassium in T1 and T2 treatments were significantly increased,and the available contents of mineral elements manganese,zinc and copper increased in different degrees.In addition,agronomic utilization and partial productivity of nitrogen fertilizer of T1 and T2 were higher than those of conventional fertilizer control(CK2),and they were descending with the increase of substitution ratio.In this study,organic fertilizer partially instead of chemical fertilizer is beneficial to rice high yield and nutrient utilization,and the replacement of 15%nitrogen fertilizer is a better method of fertilizer reduction and efficiency improvement for local rice production.
NETL
NSTL
万方数据
维普
