Effects of Cultivation in Paddy-field or Upland and Different Chemical Regulators on Quality of Rice

In order to preliminarily study the effects of cultivation in paddy-field or upland and different chemical regulators on nutrient quality of rice,the growth characters of Xinxiangyou80,R80,TANGARA and IAPAR9 which cultivated in paddy-field or upland were compared respectively.Meanwhile,MET,BR-120 and BFA were sprayed to different growth periods of TANGARA,the tested variety,to conduct chemical regulating experiment.The results showed that the rice quality of each variety cultivated in paddy-field was superior to that cultivated in upland,in which,the IAPAR9 had the best rice quality,and the R80 was next;cultivation in upland,the TANGARA had the best rice quality,and the R80 was next.Spraying chemical regulators can effectively improve the nutrient quality of rice and increase the content of crude protein;in comparison with control,the content of crude protein in the rice treated by BFA,MET and BR-120 increased by 10.7%,7.5% and 5.5%,respectively.These three kinds of plant growth regulators are helpful to improve the head rice ratio and to decrease chalky grain ratio.