山西农业大学学报（自然科学版）2025，Vol.45Issue(4)：57-66,10.DOI:10.13842/j.cnki.issn1671-8151.202503012
西北旱作区谷子轮作提升作物生产力及土壤肥力
The implementation of millet rotation in the dryland farming regions of Northwest China contributes to improved crop productivity and enhanced soil fertility
摘要
Abstract
[Objective]Foxtail millet(Setaria italica L.)is a staple crop in Northwest China's arid regions,where continuous cropping has led to severe yield decline and sustainability challenges.This study aimed to investigate the effects of various crop rotation patterns on millet growth characteristics and soil fertility,to support sustainable intensification of dryland farming sys-tems.[Methods]A two-year field experiment(2021-2022)compared four 2-year rotation systems,including corn-millet(C-M),potato-millet(P-M),sorghum-millet(S-M),and broomcorn-millet(B-M)against continuous millet monoculture(M-M,control).Changes in soil nutrient dynamics(including organic matter,total N,and available P/K),millet growth parame-ters(including stem diameter,panicle length,and LAI),and yield components and economic returns were analyzed.[Results]Compared to M-M control,rotation systems significantly improved the stem diameter by 6.33%to 14.02%,panicle length by 4.69%to 18.41%,and leaf area index by 24.49%to 47.96%.Yield hierarchy followed the order of:S-M>P-M>B-M>C-M>M-M.Notably,P-M and S-M rotation systems significantly enhanced yield by 19.00%and 19.27%,respectively.From an analysis of average soil nutrient values over two years,all rotation patterns resulted in increased soil organic matter,total ni-trogen,available phosphorus,and available potassium contents.Among these patterns,the S-M rotation notably elevated or-ganic matter content by 43.02%,while total nitrogen levels rose significantly for C-M,P-M,and S-M,with increases of 46.89%,47.27%,and 59.53%,respectively.The comprehensive soil fertility scores followed this order:P-M>S-M>C-M>M-M>B-M.The two-year economic benefit analysis indicated that,compared with continuous cultivation(M-M),the P-M and S-M rotation modes increased the total output value,net income and yield-investment ratio by 23.36%,24.29%,1.75%,and 10.91%,15.78%,11.95%,respectively.[Conclusion]The potato-millet(P-M)and sorghum-millet(S-M)ro-tation patterns significantly improved the soil's ecological environment,enhanced soil fertility,boosted overall grain field pro-ductivity,and promoted the sustainable development of the millet industry in the arid farming areas of Northwest China.关键词
谷子/轮作/土壤肥力/产量Key words
Foxtail Millet/Crop rotation systems/Soil fertility/Yield improvement分类
农业科技引用本文复制引用
李凯,王湛,罗世武,杨军学,王勇,张建彤..西北旱作区谷子轮作提升作物生产力及土壤肥力[J].山西农业大学学报（自然科学版）,2025,45(4):57-66,10.基金项目
宁夏回族自治区优秀青年基金项目(2022AAC05048) （2022AAC05048）
国家现代农业产业技术体系(CARS-06-14.5-A18) （CARS-06-14.5-A18）
中央引导地方科技发展专项(2024FRD05091) （2024FRD05091）
宁夏农业科技自主创新专项(NNKZZCGZH-2023-02 （）
NKYG-25-17) （）
小杂粮种质资源鉴评及优质抗逆新品种选育(2024FRD05091) （2024FRD05091）
