旱地不同覆盖方式对春小麦土壤酸解有机氮含量的影响
杨锦 , 胡南南 , 肖歆玥 , 王小燕 , 王凤仁 , 郑浩飞 , 路建龙 , 逄蕾 , 谭雪莲
甘肃农业大学学报 ›› 2024, Vol. 59 ›› Issue (05) : 46 -54.
旱地不同覆盖方式对春小麦土壤酸解有机氮含量的影响
Effects of different mulching methods on the acid decomposed organic nitrogen content of dryland spring wheat soils
目的 探讨西北半干旱雨养区不同覆盖方式对春小麦土壤酸解有机氮含量及分布的影响。 方法 设玉米秸秆整秆带状覆盖(TSM)、地膜覆盖(TPM)与露地平作(CK)3个处理。测定分析了2019年收获期和2020年春小麦开花期和成熟期的秸秆带状覆盖(TSM)、秸秆种植带(TSM-d)、秸秆覆盖带(TSM-u)、地膜下(TPM)和露地(CK) 0~120 cm土层的酸解全氮、酸解氨态氮、酸解氨基酸态氮、酸解氨基糖态氮和酸解未知氮含量的变化。 结果 土壤中酸解全氮、酸解氨态氮和酸解氨基酸态氮含量均随着土层深度的增加而减少;在2019年成熟期、2020年开花期和2020年成熟期0~20 cm土层,TSM处理酸解全氮含量较CK显著提高19.40%、7.26%和14.77%(P<0.05);3个时期0~20 cm土层TSM处理较CK酸解氨态氮和酸解氨基酸态氮含量提高了17.95%和18.07%;与TPM相比,TSM处理降低了0~20 cm土壤酸解氨态氮、酸解氨基酸态氮占酸解全氮的比例。土壤中各酸解有机氮占酸解全氮的比例大小顺序为:酸解氨基酸态氮>酸解氨态氮>酸解未知氮>酸解氨基糖态氮。 结论 地膜覆盖降低了0~20 cm土壤酸解有机氮含量,而秸秆带状覆盖能够有效提高0~20 cm土壤酸解有机氮含量,秸秆带状覆盖有利于土壤氮素的积累,改善土壤供氮能力也是更有效的。
Objective To investigate the effects of different mulching methods on the content and distribution of soil organic nitrogen in spring wheat fields in the semi-arid rainfed area of northwest China. Method Three treatments of corn stalk strip mulch (TSM),plastic film mulch (TPM) and open field cropping (CK) were established.The 2019 maturity stages and 2020 spring wheat flowering and maturity stages were measured and analyzed for straw strip cover (TSM),straw planting zone (TSM-d),straw cover zone (TSM-u),under plastic film (TPM) and open field (CK).Changes in acid decomposed total nitrogen,acid decomposed ammonia nitrogen,acid decomposed amino acid nitrogen,acid decomposed amino sugar nitrogen and acid decomposed unknown nitrogen in the 0~120 cm soil layer were measured and analyzed. Result The contents of acid-hydrolyzed total nitrogen,acid-hydrolyzed ammonia nitrogen and acid-hydrolyzed amino acid nitrogen in the soil decreased with increasing depth.In the 0~20 cm soil layer at the maturity stage in 2019 and at the flowering stage in 2020,the contents of acid-hydrolyzed total nitrogen in the TSM treatment were significantly higher than those of CK and TPM treatments,while at the maturity stage in 2020 they were only significantly higher than those of TPM treatment (P<0.05).The contents of acid hydrolyzed ammonia nitrogen and acid hydrolyzed amino acid nitrogen in the 0~20 cm soil layer treated with TSM were higher than those of CK in three periods; compared with TPM,TSM treatment reduced the ratio of acid hydrolyzed ammonia nitrogen and acid hydrolyzed amino acid nitrogen in the 0~20 cm soil layer to acid hydrolyzed total nitrogen.The order of the ratio of acid-decomposed organic nitrogen to acid-decomposed total nitrogen in soil is:acid-decomposed amino acid nitrogen > acid-decomposed ammonia nitrogen > acid-decomposed unknown nitrogen > acid-decomposed amino sugar nitrogen. Conclusion Straw mulch can effectively increase the organic nitrogen content of the 0~20 cm of soil,which plays an important role in maintaining nitrogen fertility and promoting the sustainable use and development of agricultural land.
straw strip mulching / plastic film mulching / soil acid hydrolysis organic nitrogen
| [1] |
胡延斌,肖国举,仇正跻, |
| [2] |
齐月,王鹤龄,张凯, |
| [3] |
程宏波,柴守玺,陈玉章, |
| [4] |
陈姣,张池,陈玉佩, |
| [5] |
吕莹莹,马建涛,李亚伟, |
| [6] |
柴守玺.一种旱地秸秆带状覆盖作物种植新技术[J].甘肃农业大学学报,2014,49(5):42. |
| [7] |
何新颖.吉林省农户玉米秸秆资源化利用生态补偿标准研究[D].长春:吉林大学,2019. |
| [8] |
马琨,宋丽丽,王明国, |
| [9] |
马芳霞,王忆芸,燕鹏, |
| [10] |
党亚爱,王立青,张敏.黄土高原南北主要类型土壤氮组分相关关系研究[J].土壤,2015,47(3):490-495. |
| [11] |
|
| [12] |
李辉,高强,张晋京.土壤中有机氮形态及测定方法的研究进展[J].中国农学通报,2014,30(21):24-28. |
| [13] |
吕真真,吴向东,刘益仁, |
| [14] |
吴汉卿,张玉龙,张玉玲, |
| [15] |
|
| [16] |
|
| [17] |
|
| [18] |
|
| [19] |
鲁如坤.土壤农业化学分析方法[M].北京:中国农业科技出版社,2000. |
| [20] |
周子军,郭松,陈琨, |
| [21] |
毛海兰,付鑫,赵丹丹, |
| [22] |
丰晨晨,陈悦,陈富鹏, |
| [23] |
李仰征,李兰,王小二, |
| [24] |
张玉玲,陈温福,虞娜, |
| [25] |
罗如熠,张世熔,徐小逊, |
| [26] |
李强,王晋,庄舜尧.我国南方不同地带性水稻土有机氮组分变化[J].土壤,2015,47(5):940-946. |
| [27] |
王美娟,段文标,陈立新, |
| [28] |
张世汉,武均,张仁陟, |
| [29] |
王克鹏,张仁陟,董博, |
| [30] |
贾倩,廖世鹏,卜容燕, |
| [31] |
王永栋,武均,郭万里, |
| [32] |
王媛,周建斌,杨学云.长期不同培肥处理对土壤有机氮组分及氮素矿化特性的影响[J].中国农业科学,2010,43(6):1173-1180. |
| [33] |
王乐云,田飞飞,能惠,不同施肥处理对农田土壤有机氮组分及其矿化的影响[J].中国海洋大学学报(自然科学版),2019,49(4):117-127. |
| [34] |
Nieder R,Benbi D K,Scherer H W.Fixation and defixation of ammonium in soils:a Review[J].Biology & Fertility of Soils,2011,47(1):1-14. |
| [35] |
张玉树,张金波,朱同彬,不同种植年限果园土壤有机氮组分变化特征[J].生态学杂志,2015,34(5):1229-1233. |
| [36] |
胡容,叶春,蒲玉琳,若尔盖高寒沼泽湿地退化过程中土壤有机氮组分的演变特征[J].土壤学报,2019,56(6):1425-1435. |
| [37] |
郝小雨,马星竹,高中超,长期施肥下黑土活性氮和有机氮组分变化特征[J].中国农业科学,2015,48(23):4707-4716. |
国家自然科学基金项目(32160525)
甘肃省自然科学基金项目(20JR5RA034)
盛彤笙创新基金项目(GSAU-STS-1736)
甘肃农业大学国家级大学生创新创业训练计划项目(202210733010)
甘肃农业大学省级大学生创新创业训练计划项目(S202110733006)
甘肃省重点研发计划(22YF7NA037)
甘肃省农业科学院重点研发计划(2022GAAS24)
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