绿洲农业科学与工程2026，Vol.11Issue(1)：7-14,8.DOI:10.26941/j.cnki.2096-2177.2026.01.002
枣园中苜蓿轮作棉花后土壤养分时空变化特征分析
Characteristics of Spatial and Temporal Changes of Soil Nutrients After Alfalfa Cotton Rotation in Jujube Garden
摘要
Abstract
The purpose of this study was to analyze the temporal and spatial variation characteristics of soil nutrients after alfalfa rotation of cotton in jujube orchards,so as to improve the understanding of soil nutrient cycling and conversion rules,and to provide a scientific basis for optimizing farmland production structure and carrying out scientific and effective nutrient management.A single-factor experimental design was adopted to establish two planting modes:cotton cropping in jujube orchards and cotton rotation after alfalfa planting in jujube orchards.The rotation effect was evaluated by measuring key indicators such as soil organic carbon(SOC),nitrate nitrogen(NO3--NN),total nitrogen(TN),ammonium nitrogen(NH4+-N)and pH.The results showed that the SOC content of 0～20 cm soil layer and 20～40 cm soil layer increased by 33.8％and 16.9％after alfalfa rotation.Under the rotation mode,the soil total carbon(TC)content in the 0～20 cm and 20～40 cm soil layers increased significantly by 44.5％and 65.3％,respectively,and the soil TN content increased even more significantly,reaching 169.5％and 283.5％,respectively.The nitrate nitrogen content of 0～20 cm soil layer was significantly higher than that of continuous cropping pattern in each growth period from July to October,and the increase rate reached 17.18％in July.The ammonium nitrogen content also showed an overall upward trend in the crop rotation mode.Under the two soil depths,the soil pH of the rotation treatment was slightly lower than that of continuous cropping.In addition,the boll weight and total boll number per plant of cotton under the rotation mode were higher than those in the continuous cropping mode,the yield of seed cotton was significantly increased by 25.3％,and the land equivalent ratio was also significantly higher than that in the continuous cropping mode,indicating that the rotation mode had higher land use efficiency.Therefore,the rotation of alfalfa in jujube-cotton intercropping system is conducive to improving soil nutrient status,soil fertility and soil quality,which is conducive to the growth and yield of cotton.关键词
轮作/棉花/苜蓿/土壤养分Key words
crop rotation/cotton/alfalfa/soil nutrients分类
农业科技引用本文复制引用
古里尼尕尔·塔西,万素梅,杨历雄,陈国栋,高学亮,崔政军,张伟,李田甜,李小飞,李玲..枣园中苜蓿轮作棉花后土壤养分时空变化特征分析[J].绿洲农业科学与工程,2026,11(1):7-14,8.基金项目
塔里木大学校长基金创新研究团队项目(TDZKCX202309) （TDZKCX202309）
兵团指导性科技计划项目(2023ZD103) Tarim University Presidential Fund Innovative Research Team Project(TDZKCX202309):Guiding Science and Technology Program Project of Xinjiang Production and Construction Corps(2023ZD103) （2023ZD103）
