Regulation and application of foliar zinc fertilizer on zinc enrichment in rice grains

doi:10.16178/j.issn.0528-9017.20250388

Abstract

Abstract:

At present，the zinc content of rice grain is generally low，and the effect of foliar zinc fertilizer spraying technology is remarkable. Reasonable optimization of foliar spraying scheme and realization of efficiency enhancement and cost reduction have a positive effect on the promotion of this technology. In this study，different zinc fertilizers and zinc application modes were used to carry out field experiments in Shaoxing，Zhejiang Province. The effects of zinc fertilizer types，zinc fertilizer spraying period and zinc-silicon combined application on rice yield and grain zinc content were studied. The results showed that the appropriate application of zinc fertilizer could significantly（p<0.05）increase rice yield and grain zinc content，among which chelating sugar alcohol zinc had the best effect，increasing rice yield and grain zinc content by 8.2% and 81.7%，respectively，compared with the control group. Besides，spraying once before the filling stage of rice，spraying zinc fertilizer twice during the filling stage and appropriate concentration of zinc and silicon combined application achieved the purpose of increasing rice yield and grain zinc content to a certain extent.

Key words: foliar spraying, zinc fertilizer, spraying period, rice grain

CLC Number:

S511

GU Haonan, TAO Juanhua, LIU Xiaoyong, CHU Junjie. Regulation and application of foliar zinc fertilizer on zinc enrichment in rice grains[J]. Journal of Zhejiang Agricultural Sciences, 2026, 67(10): 2345-2349.

Figures/Tables 5

Table 1 Rice yield and grain zinc content under different zinc fertilizer treatments

处理	千粒重/g	结实率/%	667 m²产量/kg	籽粒锌含量/（mg·kg^-1）
CK	24.3±0.2 c	82.6±0.2 e	511.8±4.1 e	12.6±0.1 d
Z1	25.4±0.2 b	85.3±0.3 c	532.6±3.7 c	19.1±1.1 b
Z2	26.1±0.2 a	86.7±0.5 b	543.2±3.5 b	20.3±1.1 b
Z3	25.1±0.3 b	83.9±0.3 d	524.6±3.7 d	16.7±0.2 c
Z4	26.2±0.3 a	89.3±0.6 a	553.9±3.2 a	22.9±0.2 a

Fig.1 Effect of different zinc fertilizer spraying periods on rice yield

Fig.2 Effect of different zinc fertilizer spraying periods on rice grain zinc content

Fig.3 Rice yield under different zinc-silicon fertilization regimes

Fig. 4 Zinc content in rice grains under different zinc-silicon fertilization regimes

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