玉米/大豆不同种植模式对土壤有机质和全氮空间分布的影响  

Effects of Different Maize/Soybean Planting Patterns on Spatial Distribution of Soil Organic Matter and Total Nitrogen

作　　者：肖特 崔阔澍[3] 黄文娟 杨文钰 张文博[5] XIAO Te;CUI Kuo-shu;HUANG Wen-juan;YANG Wen-yu;ZHANG Wen-bo(College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan Province 611130, China;Sichuan Academy of Traditional Chinese Medicine Sciences, Chengdu, Sichuan Province 610041, China;Sichuan General Popularization Centre of Agricultural Technique, Chengdu, Sichuan Province 610041, China;Sichuan Academy of Botanical Engineering, Chengdu, Sichuan Province 611730, China;Inner Mongolia Chifeng Songshan District Bureau of Agriculture and Animal Husbandry, Chifeng, Inner Mongolia 024000, China)

机构地区：[1]四川农业大学农学院,四川成都611130 [2]四川省中医药科学院,四川成都610041 [3]四川省农业技术推广总站,四川成都610041 [4]四川省植物工程研究院,四川成都611730 [5]内蒙古赤峰市松山区农牧局,内蒙古赤峰024000

出　　处：《草地学报》2022年第7期1801-1810,共10页Acta Agrestia Sinica

基　　金：国家大豆产业技术体系项目(CARS-04-PS19);国家重点研发计划项目(2016YFD0300209,2016YFD0300602);中央引导地方科技发展专项(2018SZYD0003);中央本级重大增减支项目(2060302);苗子工程(2016RZ0061);重点研发计划(2022YFN0045)资助。

摘　　要：土壤中有机质和全氮的空间分布,及其在土壤微生态、养分循环和农业可持续发展等方面有着巨大的现实意义。因此,本试验于2018—2020年,研究了土壤有机质和全氮在带状套作玉米/大豆连作(MS1)、带状套作玉米/大豆轮作(MS2)、传统套作玉米/大豆(MS3)、玉米单作(M)、大豆单作(S)和休闲地(FL)6个模式下的含量及空间分布。结果表明,套作土壤全氮大豆行含量大于玉米,不同种植模式下有机质含量存在显著差异(P<0.05)。土壤有机质(29.19 g·kg-1)和全氮(10.19 g·kg-1)以MS2含量最高。FL土壤有机质含量(1.69 g·kg-1)和全氮含量(0.64 g·kg-1)最低。本研究认为,MS2是较好的带状套作种植模式,该模式能增加土壤有机质和全氮的空间分布,从而提高土壤肥力和C∶N比。The spatial distribution of organic matter and total nitrogen in soil has great practical significance in soil microbiology,nutrient cycling and agricultural sustainable development.Therefore,this field experiment was conducted in 2018-2020 to study the effect of different planting patterns arrangements of maize and soybean inter-cropping on spatial distribution of soil total nitrogen and organic matter contents.The planting patterns included continuous maize/soybean relay strip inter-cropping(MS1),maize/soybean relay strip inter-cropping in rotations(MS2),Traditional maize/soybean inter-cropping(MS3),sole maize(M),sole soybean(S),and fallow land(FL).The results showed that the total nitrogen content of soybean row in intercropping soil was higher than that of maize,and the organic matter content was significantly different under different cropping patterns(P<0.05).MS2 had the highest soil organic matter and total nitrogen,29.19 g·kg-1 and 10.19 g·kg-1,respectively.In contrast,FL’s soil organic matter content was 81.69 g·kg-1 and total nitrogen content was 0.64 g·kg-1,both of which were the lowest.It indicated that MS2 was the best planting pattern for strip relay inter-cropping,which could increase spatial distribution of soil organic matter and total nitrogen,consequently,improve the soil fertility and C∶N ratio.

关 键 词：种植模式 土壤有机质和全氮 空间分布 

分 类 号：S1[农业科学—农业基础科学] S31