甘肃省不同区域人工草地土壤肥力特征研究
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摘要
以甘肃省不同区域人工草地土壤样品为研究对象,测定12个不同区域[民乐县(ML1、ML2)、安定区(AD)、通渭县(TW1、TW2、TW3、TW4)、宁县(NX1、NX2)、靖远县(JY1、JY2、JY3)]人工草地土壤的pH值、有机质、全氮、速效磷、速效氮、速效钾。结果表明:AD的p H值最大,JY3的pH值最小;TW2有机质含量最高,AD有机质含量最低,TW2较AD提高了78.95%,在TW2种植陇东苜蓿对土壤有机质影响大;TW2、TW3速效氮含量较高,约为AD速效氮含量的3倍,在TW2、TW3种植陇东苜蓿对土壤速效氮影响大;JY2速效钾含量是AD的3倍,TW2速效钾的含量最低,在JY2种植陇东苜蓿对速效钾影响大;ML1、ML2速效磷含量较高,NX1、NX2速效磷含量较小,在NX1、NX2种植陇东苜蓿对土壤速效磷影响小;TW2全氮含量最高,较AD提高了85.07%,在TW2种植陇东苜蓿对土壤全氮影响大。综合分析结果显示,TW2土样的关联度值最大(0.787 9),综合肥力最好,为最优土样;NX2土样的关联度最小(0.500 7),综合肥力最差。
The soil p H,organic matter,total nitrogen,available phos phorus,available nitrogen available potassium of artificial grassland in 12 different regions of Gansu province [Minle county(ML1,ML2),Anding district(AD),Tongwei county(TW1,TW2,TW3,TW4),Ningxian county(NX1,NX2)and Jingyuan county(JY1,JY2,JY3)]were measured by using soil samples from different regions of Gansu province. The results showed that the p H value of AD was the highest and the p H value of JY3 was the smallest. The organic matter content of TW2 soil samples was the highest,the organic matter content in TW2 soil samples was the lowest,and the organic matter content of TW2 soil was increased by 78.95%.TW2 and TW3 soil samples had the highest effect on soil organic matter. TW2 and TW3 had the highest content of available nitrogen in soil samples,which was about 3 times of the available nitrogen content of AD soil. In TW2 and TW3,the effect of alfalfa on soil available nitrogen was significant. The content of available potassium in JY2 soil samples was the highest content of available potassium in AD2 and TW2 soil samples,and the effect of available matter potassium in JY2 planted Longdong alfalfa was high. The ML1 and ML2 in soil samples were about NX1 and NX2 and the effect of NX1 and NX2 on the soil available phosphorus was higher in NX1 and NX2 plants. The highest TW content in soil samples was 85.07% higher than that in AD,and the effect of TW2 on alfalfa was significant. The results of comprehensive analysis showed that the correlation value of TW2 soil samples was the highest(0.787 9),the best comprehensive fertility was the best soil sample,and the correlation degree of NX2 soil samples was the smallest(0.500 7)and the comprehensive fertility was the worst.
The soil p H,organic matter,total nitrogen,available phos phorus,available nitrogen available potassium of artificial grassland in 12 different regions of Gansu province [Minle county(ML1,ML2),Anding district(AD),Tongwei county(TW1,TW2,TW3,TW4),Ningxian county(NX1,NX2)and Jingyuan county(JY1,JY2,JY3)]were measured by using soil samples from different regions of Gansu province. The results showed that the p H value of AD was the highest and the p H value of JY3 was the smallest. The organic matter content of TW2 soil samples was the highest,the organic matter content in TW2 soil samples was the lowest,and the organic matter content of TW2 soil was increased by 78.95%.TW2 and TW3 soil samples had the highest effect on soil organic matter. TW2 and TW3 had the highest content of available nitrogen in soil samples,which was about 3 times of the available nitrogen content of AD soil. In TW2 and TW3,the effect of alfalfa on soil available nitrogen was significant. The content of available potassium in JY2 soil samples was the highest content of available potassium in AD2 and TW2 soil samples,and the effect of available matter potassium in JY2 planted Longdong alfalfa was high. The ML1 and ML2 in soil samples were about NX1 and NX2 and the effect of NX1 and NX2 on the soil available phosphorus was higher in NX1 and NX2 plants. The highest TW content in soil samples was 85.07% higher than that in AD,and the effect of TW2 on alfalfa was significant. The results of comprehensive analysis showed that the correlation value of TW2 soil samples was the highest(0.787 9),the best comprehensive fertility was the best soil sample,and the correlation degree of NX2 soil samples was the smallest(0.500 7)and the comprehensive fertility was the worst.
引文
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[18]董守坤,刘丽君,孙聪殊,等.氮肥施用方式对土壤有机质与氮素含量的影响[J].大豆科学,2010,29(5):836-839.
[19]徐丽君,王波,辛晓平.紫花苜蓿人工草地土壤养分及土壤微生物特性[J].草地学报,2011,19(3):406-411.
[20]王振南,张清平,陆姣云,等.基于灰色关联度法的不同年龄紫花苜蓿草地土壤肥力评价[J].草业科学,2015,32(8):1230-1236.
[2]王百群,姜峻,都全胜,等.黄土丘陵区人工草地牧草营养元素累积及土壤有机碳与养分特征[J].水土保持研究,2010,17(6):127-132.
[3]齐文娟,龙瑞军,冯瑞章,等.江河源区不同建植年限人工草地土壤微生物及酶活性研究[J].水土保持学报,2007,21(4):145-149.
[4]庞元明.土壤肥力评价研究进展[J].山西农业科学,2009,37(2):85-87.
[5]丛晓峰,黎斌,陈昊.西安植物园新建城市绿地土壤肥力综合评价[J].陕西林业科技,2015,8(6):1-6.
[6]金继运.“精准农业”及其在我国的应用前景[J].植物营养与肥料学报,1998,4(1):1-7.
[7]王子龙,付强,姜秋香.土壤肥力综合评价研究进展[J].农业系统科学与综合研究,2007,23(1):15-18.
[8]郑剑英,李宇辉,张晓荣,等.土壤养分速测的土样采集方法[J].吉林农业,2006,192(2):23.
[9]陈宝书.草原学与畜牧学实习实验指导[M].兰州:甘肃科学技术出版社,1991:13-80.
[10]蒋实,徐争启,张成江.四川省万源市土壤pH值测定及土壤酸碱度分析[J].安徽农业科学,2009,37(25):12105-12108.
[11]祁娟,张德罡.草原生态化学实验指导[Z].兰州:甘肃农业大学草业学院,2013:50-61.
[12]王振南,张清平,陆姣云,等.基于灰色关联度法的不同年龄紫花苜蓿草地土壤肥力评价[J].草业科学,2015,32(8):1230-1236.
[13]符云鹏,王小翠,陈雪,等.毕节烟区土壤p H值分布状况及与土壤养分的关系[J].土壤,2013,45(1):46-51.
[14]钱笑杰,张晓芳,曾文龙,等.龙岩市植烟土壤pH空间分布及其与土壤有效养分的相关性研究[J].苏州科技学院学报(自然科学版),2015,32(3):75-80.
[15]赫伟红.土壤酸碱性对土壤肥力和作物生长的影响[J].现代农村科技,2012(24):43.
[16]宋春雨,张兴义,刘晓冰,等.土壤有机质对土壤肥力与作物生产力的影响[J].农业系统科学与综合研究,2008,24(3):357-362.
[17]钱笑杰,林晓兰,肖靖,等.福建果园土壤pH值、养分关系与土壤肥力质量评价研究———以福建省漳州市平和县琯溪蜜柚园地为例[J].福建热作科技,2017,24(1):9-15.
[18]董守坤,刘丽君,孙聪殊,等.氮肥施用方式对土壤有机质与氮素含量的影响[J].大豆科学,2010,29(5):836-839.
[19]徐丽君,王波,辛晓平.紫花苜蓿人工草地土壤养分及土壤微生物特性[J].草地学报,2011,19(3):406-411.
[20]王振南,张清平,陆姣云,等.基于灰色关联度法的不同年龄紫花苜蓿草地土壤肥力评价[J].草业科学,2015,32(8):1230-1236.