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不同有机物施用对土壤有机碳形态结构的影响

时间:2018-07-11 22:02来源:毕业论文
探讨减肥条件下施用不同有机物对土壤有机碳形态结构的影响,旨在培肥土壤的同时探索减施化肥与农业废弃物利用的出路。研究结果显示,在红薯-油菜轮作制度下,减肥配施有机物

摘要:化肥过量施用导致的土壤污染问题日益严重,如何降低化肥施用量的同时提升地力以及降低农业面源污染已成为众多学者研究的热点。本研究选取江西省旱地红壤地区农业试验区,通过连续2年有机施肥试验,设不施肥,常规施肥,减量施肥,减量施肥+水稻秸秆,减量施肥+生物黑炭,减量施肥+猪粪,减量施肥+蚓粪7个处理,探讨减肥条件下施用不同有机物对土壤有机碳形态结构的影响,旨在培肥土壤的同时探索减施化肥与农业废弃物利用的出路。研究结果显示,在红薯-油菜轮作制度下,减肥配施有机物料,土壤pH较常规施肥有明显的上升趋势,土壤速效养分也有明显高于常规施肥;因此,不同有机物料替代部分化肥,可以在一定程度上提高土壤活性有机碳的含量,对于土壤培肥,提高土壤质量,改善土壤环境有着至关重要的作用。25653
毕业论文关键词:有机碳;有机物;形态结构;土壤;
Different organic fertilization on the influence of shape and structure of soil organic carbon
Abstract: The problem of soil pollution caused by excessive fertilizer application is becoming more and more serious, and how to reduce the amount of fertilizer application and increase the ground force and reduce the pollution of agricultural surface source has become the hotspot of many scholars. This study selects the Agricultural test zone of upland red soil area in Jiangxi Province, through two consecutive years of organic fertilization trials, the establishment of non-fertilization (CK), conventional fertilization (CF), reduced fertilizer (RF), reduced fertilizer + rice straw (RFR), reducing fertilizer + bio-carbon (RFB), reducing fertilizer + pig manure (RFP), reducing fertilizer + earthworm (RFV) , altogether seven treatments, discussing the effect of different organic compounds on soil organic carbon morphology and structure in weight loss condition, Objective to explore the way out of fertilizer and agricultural wastes. The main results are as follows: In the sweet potato-rape rotation system, weight loss with organic materials, soil pH is higher than conventional fertilization, the soil available nutrients are obviously more than the conventional fertilization; Therefore, different organic materials substitute some fertilizer, can improve the content of soil active organic matter to some extent, to soil fertility, improve soil quality, improve soil environment has a vital role.
Keywords: organic matter; organic; morphological structure; soil.
目录

摘要    1
关键词    1
Abstract    1
Keywords    1
材料与方法    2
1.1试验材料    2
1.1.1供试有机物料    2
1.1.2供试作物    2
1.1.3 主要仪器    3
1.1.4主要化学试剂    3
1.2采样地点    3
1.3实验设计    3
1.4采样方法    4
1.5测定指标及方法    4
1.6技术路线    4
2  结果与分析    5
2.1不同有机物施用对土壤理化性质的影响    5
2.2不同有机物施用对土壤总有机碳含量的影响    6
2.2不同有机物施用对土壤有机碳活性组分的影响    6
2.2.1 不同施肥处理对土壤有机碳活性组分含量的影响    6
2.2.2不同施肥处理对土壤不同有机碳活性组分比率的影响    7
2.3不同施肥处理土壤有机碳活性组分、总有机碳的相关分析    8
3  讨论    8
4  结论    9
致谢    9
参考文献:    10 不同有机物施用对土壤有机碳形态结构的影响:http://www.lwfree.com/shengwu/lunwen_19534.html
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