Effect of organic fertilizer combined with nitrogen fertilizer regulation on yield and quality of glutinous rice during the booting-heading stage under high temperature
In order to clarify the effects of organic fertilizer combined with nitrogen fertilizer regulation on the yield and quality of glutinous rice during the booting-heading stage under high temperature,a randomized block experiment was conducted.Three treatments were set:organic fertilizer combined with conventional nitrogen fertilizer management(base fertilizer ∶ tillering fertilizer ∶ heading fertilizer= 4 ∶ 3 ∶ 3,CK),organic fertilizer combined with early tillering fertilizer(base fertilizer ∶ tillering fertilizer ∶ heading fertilizer = 5 ∶ 2 ∶ 3,T-CK),and organic fertilizer combined with early heading fertilizer(base fertilizer ∶ tillering fertilizer ∶ heading fertilizer = 5 ∶ 3 ∶ 2,P-CK).The study also took into account the extreme high temperature weather conditions in Zhejiang Province in 2022(with 13 days of highest temperature above 35℃and 12 consecutive days of temperature exceeding 35℃,with a heat damage degree of 36℃and a severity level of severe).The aim was to investigate the effects of organic fertilizer combined with nitrogen fertilizer regulation on the yield and quality of glutinous rice during the booting-heading stage under high temperature.This study indicates that the heat damage loss rate of glutinous rice is significantly negatively correlated with the grain setting rate of glutinous rice.Compared with CK,T-CK significantly increased the number of grains per spike by 8.80%,and significantly reduced the content of amylose by 50%;The protein content in P-CK grains significantly decreased by 2.10%.In terms of heat damage loss rate,P-CK has the lowest heat damage loss rate.In summary,the combination of organic fertilizer and panicle fertilizer(base fertilizer ∶ tillering fertilizer ∶ heading fertilizer= 5 ∶ 3 ∶ 2)can alleviate high temperature and heat stress during the the booting-heading period of glutinous rice.
glutinous ricenitrogen fertilizerhigh temperature heat damagequality
NETL
NSTL
万方数据
维普
