In order to explore the effects of new fertilizers on the yield,dry matter accumulation,annual economic benefits,and production efficiency of double cropping rice in the Yangtze River region,the experiment comprehensively examined the effects of new fertilizers on the agronomic traits and annual economic benefits of double cropping rice by setting up four fertilization treatments:conventional compound fertiliz-er,new controlled loss fertilizer,urea formaldehyde compound fertilizer,and new controlled release fertilizer in two different regions.The re-sults showed that there were significant differences in the number of grains per panicle and seed setting rate among the early rice yield compo-nents,and there was no significant difference in the cumulative total dry matter among the experimental treatments.Compared with the appli-cation of conventional compound fertilizer,the highest annual yield was achieved in the application of new controlled release fertilizer,which increased yield by 5.4% and grain production efficiency by 22.0%;the highest annual net profit output value was achieved through the appli-cation of new controlled release fertilizer,which increased by 10.5% .The new controlled release fertilizer had a significant effect on the annu-al yield and grain production efficiency of double cropping rice,and could significantly increase the number of grains per panicle and seed set-ting rate of early rice.The new controlled release fertilizer had a significant effect on the economic benefits of annual production of double cropping rice.
关键词
双季稻/新型肥料/产量/干物质/效益
Key words
Double cropping rice/New type of fertilizer/Yield/Dry matter/Benefit
维普
万方数据