Different fertilization Patterns on Agronomic Traits of Rapeseed and the Impact of Yield
Oilseed rape is one of the main oil crops in Guizhou.In order to improve the yield of oilseed rape,this experiment used Youyan2013 as the test material and explored the agronomic traits and yield of oilseed rape under different fertilization modes(no fertilization for a long period of time,con-ventional fertilization,straw return to the field,biochar,organic fertilizer).The experimental results showed that no fertilization was not conducive to the development of oilseed rape diameter circumfer-ence,plant height,number of branches at one time,number of corner fruits in main inflorescence,number of corner fruits in whole plant and accumulation of thousand grain weight.Application of biochar was beneficial to the development of oilseed rape diameter circumference,plant height,number of branches at one time,number of corner fruits in main inflorescence and number of corner fruits in whole plant.The application of organic fertilizer was beneficial for the growth of the main inflorescence,while conventional fertilizer and straw returning to the field are beneficial for increasing the thousand grain weight and accumulating dry matter.In terms of economic benefits,the cost of adding commercial organic fertilizer was relatively high,and the value of production,yield and returns without fertilizers are unsatisfactory;the higher returns are from straw return treatment,followed by conventional fertilizers,and finally biochar.Through the correlation analysis,the higher the number of corner fruits in main inflorescence,the more the number of corner fruits in whole plant,the higher its yield and production value;the larger the diameter circumference(plant height)the more the the number of corner fruits in main inflorescence(number of corner fruits in whole plant),the more conducive to the increase of yield and production value.In summary,it is recommended to apply straw to the field in terms of economic benefits,application of biomass charcoal is recommended in terms of growth and yield.
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