摘要
为探讨长期轮作施肥对菜田土壤pH值变化特征的影响,在闽东南蔬菜主产区连续进行7年四季豆-芥菜-早稻/豇豆轮作结合推荐施肥/习惯施肥模式的一年三熟制定位试验。根据试验年限内土壤pH实测值,构建土壤pH值变化灰色预测模型,分析不同轮作施肥模式对土壤pH值的影响及其变化趋势。结果表明,在7年定位试验期间,菜-菜-稻轮作结合推荐施肥处理(VR+RF)的土壤pH均值为5.24,显著高于菜-菜-菜连作结合推荐施肥(VV+RF)或习惯施肥(VV+FP),但与菜-菜-稻轮作结合习惯施肥处理(VR+FP)无显著差异。TPGM(1,1)灰色模型分析显示,VR+RF处理的土壤酸化速率均值为0.065个pH/年,但VV+RF、VR+FP和VV+FP三个处理的土壤酸化速率均值分别是VR+RF处理的2.077、1.215和2.231倍。灰色预测还表明,未来5年菜-菜-稻轮作结合推荐施肥和习惯施肥土壤pH均值将比基础土壤分别下降0.56和0.67个pH单位;菜-菜-菜轮作结合推荐施肥和习惯施肥土壤pH均值则将比基础土壤pH值分别下降1.05和1.13个pH单位。综上,菜-菜-稻轮作结合推荐施肥的生产模式是减缓当地菜田土壤酸化的有效耕作管理措施,对菜田土壤培肥具有重要生产价值。本研究结果为耕地土壤酸化改良提供了科学依据。
A fixed-plot rotation experiment was conducted to investigate the long-term effects of crop rotation and fertilization on soil pH changes in vegetable fields.The experiment involved a rotation of kidney bean,mustard leaf,and early rice or cowpea for one year,combined with recommended fertilization and fertilization based on the farmer’s practice.The study was conducted for seven years in the primary vegetable-producing area of southeastern Fujian province,China.A grey prediction model was developed based on the measured soil pH values over the experimental period to investigate the impact of various crop rotation and fertilization treatments on soil pH changes.The findings of this study indicate that the average soil pH in the RF(recommended fertilization)+VR(vegetable-rice rotation)treatment was 5.24,which was significantly higher than those in the RF or FP(fertilization according to the farmer’s practice)+VV(vegetable-vegetable rotation)treatments.However,the soil pH in the treatment of RF+VR was not significantly different from that in the treatment of VR+FP.The TPGM(1,1)grey model analysis revealed that the average rate of soil acidification in the VR+RF treatment was 0.065 pH units/year during the 7-year experiment.The average acidification rates in the treatment of VV+RF,VR+FP,and VV+FP were 2.077,1.215 and 2.231 times higher than that of the VR+RF treatment,respectively.According to the grey prediction model,the soil pH was expected to decrease by 0.56 and 0.67 pH units over the next five years in the treatment of VR+RF and VR+FP,respectively,compared to the initial soil pH.However,in the VV+RF and VV+FP treatments,the soil pH was expected to decrease by 1.05 and 1.13 pH units,respectively,compared to the initial soil pH.The results of this study suggest that the VR+RF production mode can effectively prevent the acidification of soil in vegetable fields and improve soil fertility,making it a valuable tillage management measure for vegetablegrowing areas.The results of this study provide a scientific ba
作者
张立成
李娟
章明清
姚建族
ZHANG Licheng;LI Juan;ZHANG Mingqing;YAO Jianzu(Soil and Fertilizer Institute of Fujian Academy of Agricultural Sciences,Fuzhou,Fujian 350013;Agro-Technical Extension Station of Yongchun Country,Quanzhou,Fujian 362600)
出处
《核农学报》
CAS
CSCD
北大核心
2023年第7期1462-1469,共8页
Journal of Nuclear Agricultural Sciences
基金
福建省自然科学基金青年创新项目(2021J05089)
福建省农业科学院青年英才项目(YC2019005)。
关键词
菜田
轮作
施肥模式
土壤酸化
灰色模型
vegetable field
crop rotation
fertilization pattern
soil acidification
grey model
