Effects of Zinc Fertilization on Rice Yield and Quality in Hanzhong
Through investigating the effects of zinc fertilization on both rice yield and quality in Hanzhong,the objective is to determine the optimal dosage of zinc fertilizer suitable for rice cultivation in the region.This study aims to lay a solid scientific foundation for enhancing both the yield and quality of rice crops.In this stud-y,'Yixiangyou 2115',one of the main rice varieties in Hanzhong region,was selected as the research object,six treatments were set:Zn0(no zinc fertilizer),Zn1(0.3 kg/667m2 of zinc fertilizer),Zn2(0.6 kg/667m2 of zinc fertilizer),Zn3(0.9 kg/667m2 of zinc fertilizer),Zn4(1.2 kg/667m2 of zinc fertilizer),and Zn5(1.5 kg/667m2 of zinc fertilizer).The effects of zinc fertilization on rice yield were explored.The yield analysis showed a ranking of Zn5>Zn4>Zn3>Zn2>Zn1>Zn0.Among these treatments,the highest rice yield was recorded in the Zn5 group,reaching 10 018.5 kg/hm2,which was 1 947.0 kg/hm2 higher than that of Zn0.Compared with Zn0,all treatments significantly increased the number of effective panicles and ears at the ripe-ning stage,with a positive correlation observed between zinc fertilizer application and panicle and ear production.The Zn5 treatment exhibited the highest number of effective ears and ear grains among the treatments.Spraying zinc fertilizer can increase the zinc content in rice bran,brown rice and polished rice,mainly manifested as rice bran>brown rice>polished rice,and Zn3 treatment is the best concentration treatment.
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