Comparative analysis of nutrient absorption in rice cultivation: Aerobic versus anaerobic conditions in furrow-irrigated rice

IF 1.3 Q3 AGRONOMY
Justin L. Chlapecka, Trenton L. Roberts, Jarrod T. Hardke
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Abstract

Rice (Oryza sativa L.) production in the Mid-Southern United States has traditionally been under conventional flood (CF) production, namely, direct-seeded and delayed-flood production. However, furrow-irrigated rice (FIR) has grown to comprise over 15% of Arkansas’ and 30% of Missouri's rice hectarage. The uptake of several nutrients, including phosphorus (P), potassium (K), and zinc (Zn), has been shown to differ between aerobic and flooded rice production. Hence, a nutrient uptake survey was conducted from 2018 to 2020 in FIR fields to determine the difference in nutrient uptake (macro- and micronutrients) between the upper generally aerobic environment at the top of the field and the bottom of the field, where a generally anaerobic or flooded environment existed from R1 to maturity. Aboveground biomass samples were taken at R3 from four nitrogen (N) treatments at the top and bottom of five sites on a clayey soil texture and four sites on a loamy soil texture. Results suggest that there is significantly lower P, K, sodium (Na), and manganese (Mn) uptake at the top of the field compared to the bottom of the field on both soil textures. Additionally, the N treatments that yielded the highest biomass generally led to the greatest uptake of all nutrients examined. The decrease in P and K uptake in the aerobic portion of an FIR field suggests that they may require altered fertilizer recommendations compared to the traditional CF rice system.

水稻栽培中养分吸收的比较分析:沟灌水稻有氧条件与厌氧条件的比较
美国中南部的水稻(Oryza sativa L.)生产历来采用传统的洪水(CF)生产方式,即直接播种和延迟洪水生产。然而,沟灌水稻(FIR)已占阿肯色州水稻种植面积的 15%,密苏里州水稻种植面积的 30%。事实证明,有氧和灌溉水稻生产对磷 (P)、钾 (K) 和锌 (Zn) 等几种养分的吸收存在差异。因此,从 2018 年到 2020 年,在 FIR 田进行了养分吸收调查,以确定从 R1 到成熟期,位于田顶的上层一般好氧环境与存在一般厌氧或淹水环境的田底之间的养分吸收(宏量和微量营养元素)差异。在 R3 期,从五个土壤质地为粘土的地点和四个土壤质地为壤土的地点的顶部和底部的四个氮(N)处理中采集了地上生物量样本。结果表明,在两种土壤质地上,田间顶部对磷、钾、钠(Na)和锰(Mn)的吸收量都明显低于田间底部。此外,生物量最高的氮处理通常对所有养分的吸收量最大。与传统的 CF 水稻系统相比,FIR 稻田好氧部分对 P 和 K 的吸收率下降,这表明它们可能需要改变肥料建议。
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来源期刊
Agrosystems, Geosciences & Environment
Agrosystems, Geosciences & Environment Agricultural and Biological Sciences-Agricultural and Biological Sciences (miscellaneous)
CiteScore
2.60
自引率
0.00%
发文量
80
审稿时长
24 weeks
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