Effects of Fertilizer Variety on Yield,Quality and Diet Safety in Grains of High Quality Rice

With superiority rice Guixiaozhan as material,through field plot experiment,effects of chemical fertilizer,Delong organic fertilizer,long-term controlled release fertilizer,and blank control on rice yield,rice quality and diet safety(Hg,As,Cd content) were studied.The results showed that the filled grain number per panicle and seed setting rate of Delong organic fertilizer and chemical fertilizer treatment are significantly higher than long-term controlled release fertilizer,so as to result in higher yields than that of the long-term controlled release fertilizer.There existed significant differences in rice quality traits among the different fertilizer treatments.Among them,fertilizer treatments had little effect on the rice cooking and eating quality,but showed an obvious effect on the processing and appearance qualities.In terms of the processing quality,the chemical fertilizer application treatment could significantly enhance the milled rice yield,and the head rice yields of the Delong organic fertilizer and chemical fertilizer treatments are significantly higher than the long-term controlled release fertilizer.On the aspect of the appearance quality,all of the treatments could significantly decrease the chalky grains percentage and chalkiness percentage of rice,and the chemical fertilizer treatment had the largest effect on the rice appearance quality.Fertilization may lead to the increase in Hg,As,Cd content in rice,and lower the quality of health.In terms of Hg content in brown rice,three fertilizer treatments all were significantly higher than that of the blank control treatment.The As content in brown rice of the long-term controlled release fertilizer and chemical fertilizer treatments and the Cd treatment in brown rice of the long-term controlled release fertilizer were significantly higher than that of the blank control fertilizer treatment.Under this experiment condition,the Delong organic fertilizer and chemical fertilizer treatments were beneficial to increase the rice yield,and improve the rice quality to a higher level.The Delong organic fertilizer was the most conductive treatment to gain higher edible safety of rice.