Effects of foliar spraying inhibitor on uptake and translocation of cadmium in rice under flooded paddy field

doi:10.3969/j.issn.1004-1524.2022.06.15

Acta Agriculturae Zhejiangensis ›› 2022, Vol. 34 ›› Issue (6): 1248-1257.DOI: 10.3969/j.issn.1004-1524.2022.06.15

• Environmental Science • Previous Articles Next Articles

Effects of foliar spraying inhibitor on uptake and translocation of cadmium in rice under flooded paddy field

TAI Yueying^a(), HE Tengbing^a^,^b, CHEN Xiaoran^c, ZHANG Wang^a, HUANG Xiaoyun^a, LIU Hongyan^a, GAO Zhenran^b^,^*()

a. School of Agriculture, Guizhou University, Guiyang 550000, China
b. New Rural Development Institute, Guizhou University, Guiyang 550000, China
c. College of Resources and Environmental Engineering, Guizhou University, Guiyang 550000, China

Received:2021-06-25 Online:2022-06-25 Published:2022-06-30
Contact: GAO Zhenran

Abstract

Abstract:

In this study, a field experiment was conducted to study the effect of foliar application of different inhibitors on the uptake and translocation of cadmium by rice. The treatments included CK (no spraying), ZK1 (manganese and zinc), ZK2 (chitosan selenium and silica sol), ZK3 (water-soluble silicon), ZK4 (chelated iron) and ZK5 (silica sol). The results showed that compared with CK, ZK1, ZK2 and ZK4 treatments significantly (P<0.05) increased rice yield by 13.08%-44.19%; ZK1-ZK5 treatments significantly (P<0.05) increased the relative chlorophyll content of rice by 13.18%-24.42% at the filling stage; ZK1-ZK4 treatments significantly (P<0.05) reduced the enrichment coefficient of Cd in brown rice by 42.31%-57.69%; ZK1-ZK5 treatments significantly (P<0.05) reduced the translocation coefficient of Cd from leaf to brown rice with a decrease of 26.63%-71.28%, and reduced the translocation coefficient of Cd from stem to brown rice with a decrease of 26.93%-65.87%; ZK1, ZK2 and ZK3 treatments significantly (P<0.05) reduced the Cd content in brown rice by 55.88%, 20.59% and 17.65%, respectively. Therefore, with the condition of constant flooding, the inhibitor containing the manganese and zinc, or chitosan selenium and silica sol, is not only conducive to improve the rice yield, but also effective to reduce the content of Cd in brown rice.

Key words: foliar spraying, inhibitor, rice, cadmium, uptake and translocation

CLC Number:

S145.9

TAI Yueying, HE Tengbing, CHEN Xiaoran, ZHANG Wang, HUANG Xiaoyun, LIU Hongyan, GAO Zhenran. Effects of foliar spraying inhibitor on uptake and translocation of cadmium in rice under flooded paddy field[J]. Acta Agriculturae Zhejiangensis, 2022, 34(6): 1248-1257.

Figures/Tables 6

References 49

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处理 Treatment	抽穗期 Heading stage	灌浆期 Filling stage	成熟期 Mature stage
CK	87.27±1.16 d	98.97±2.04 bc	107.83±1.89 ab
ZK1	91.70±1.05 c	95.63±0.67 cd	106.80±3.94 b
ZK2	91.70±1.91 c	105.60±2.19 a	110.40±4.27 ab
ZK3	88.83±1.20 d	94.60±1.55 d	107.13±1.86 b
ZK4	97.77±1.88 a	102.87±2.40 ab	113.90±3.21 a
ZK5	95.07±0.51 b	104.00±3.57 a	113.50±2.52 a

处理 Treatment	抽穗期 Heading stage	灌浆期 Filling stage	成熟期 Mature stage
CK	87.27±1.16 d	98.97±2.04 bc	107.83±1.89 ab
ZK1	91.70±1.05 c	95.63±0.67 cd	106.80±3.94 b
ZK2	91.70±1.91 c	105.60±2.19 a	110.40±4.27 ab
ZK3	88.83±1.20 d	94.60±1.55 d	107.13±1.86 b
ZK4	97.77±1.88 a	102.87±2.40 ab	113.90±3.21 a
ZK5	95.07±0.51 b	104.00±3.57 a	113.50±2.52 a

处理 Treatment	产量 Yield/(kg·hm^-2)	穗粒数 Grain number per spike	千粒重 1 000 seed weight/g	结实率 Seed setting rate/%
CK	7 605.0±100.4 d	236±48 b	21.46±0.62 b	91.25±0.02 b
ZK1	8 824.0±118.8 b	307±32 a	21.56±0.16 b	93.21±0.02 b
ZK2	8 599.7±120.0 c	249±30 ab	22.33±1.24 ab	93.26±0.01 b
ZK3	7 185.0±30.8 e	280±32 ab	19.25±0.51 c	87.22±0.02 c
ZK4	10 965.3±62.0 a	243±45 ab	23.68±1.41 a	97.11±0.01 a
ZK5	6 897.0±45.9 f	295±31 ab	19.12±0.88 c	86.75±0.01 c

处理 Treatment	产量 Yield/(kg·hm^-2)	穗粒数 Grain number per spike	千粒重 1 000 seed weight/g	结实率 Seed setting rate/%
CK	7 605.0±100.4 d	236±48 b	21.46±0.62 b	91.25±0.02 b
ZK1	8 824.0±118.8 b	307±32 a	21.56±0.16 b	93.21±0.02 b
ZK2	8 599.7±120.0 c	249±30 ab	22.33±1.24 ab	93.26±0.01 b
ZK3	7 185.0±30.8 e	280±32 ab	19.25±0.51 c	87.22±0.02 c
ZK4	10 965.3±62.0 a	243±45 ab	23.68±1.41 a	97.11±0.01 a
ZK5	6 897.0±45.9 f	295±31 ab	19.12±0.88 c	86.75±0.01 c

处理	根	茎	叶	糙米
Treatment	Root	Stem	Leaf	Brown rice
CK	0.665±0.165 b	0.067±0.017 ab	0.030±0.003 bc	0.026±0.008 a
ZK1	0.748±0.042 b	0.088±0.011 a	0.045±0.004 a	0.011±0.001 c
ZK2	0.623±0.198 bc	0.070±0.033 ab	0.040±0.014 ab	0.013±0.002 c
ZK3	0.430±0.034 c	0.048±0.005 b	0.025±0.001 c	0.013±0.002 c
ZK4	0.663±0.060 b	0.095±0.013 a	0.033±0.004 bc	0.015±0.002 bc
ZK5	0.973±0.030 a	0.094±0.001 a	0.032±0.002 bc	0.020±0.001 ab

Effects of foliar spraying inhibitor on uptake and translocation of cadmium in rice under flooded paddy field

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处理 Treatment	根—茎 Root to stem	根—叶 Root to leaf	茎—叶 Stem to leaf	叶—糙米 Leaf to brown rice	茎—糙米 Stem to brown rice
CK	0.105±0.002 bc	0.047±0.008 b	0.448±0.072 b	0.860±0.222 a	0.375±0.323 a
ZK1	0.117±0.008 b	0.061±0.003 a	0.519±0.035 ab	0.247±0.028 d	0.128±0.014 e
ZK2	0.110±0.016 bc	0.064±0.004 a	0.589±0.058 a	0.322±0.049 cd	0.192±0.047 cd
ZK3	0.110±0.005 bc	0.059±0.005 a	0.537±0.049 a	0.511±0.047 b	0.274±0.030 b
ZK4	0.143±0.008 a	0.050±0.002 b	0.351±0.012 c	0.460±0.059 bc	0.161±0.017 de
ZK5	0.097±0.004 c	0.032±0.002 c	0.340±0.026 c	0.631±0.022 b	0.214±0.016 c

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