24小时热门版块排行榜    

CyRhmU.jpeg
查看: 754  |  回复: 2

蔡静蔡静

金虫 (正式写手)

[求助] 本科毕业论文摘要求翻译已有1人参与

摘要:本文研究了长期单施有机肥和化肥对苹果园土壤理化性质的影响,结果表明:长期施用化肥苹果园土壤的pH值较长期施用有机肥偏低7%;长期施用化肥苹果园土壤的有机碳、全氮、全钾、铵态氮、速效钾含量与施用有机肥相比无显著差异;但是长期施用化肥苹果园土壤的全磷、速效磷、硝态氮含量比施用有机肥显著提高了,提高幅度依次是236.1%、204.4%、215.4%;长期施用化肥降低了苹果树对磷素的吸收和利用,导致磷素在土壤中大量的累积,最终导致磷素的流失。

关键词:化肥;有机肥;土壤;叶片;理化性质
回复此楼

» 猜你喜欢

» 本主题相关价值贴推荐,对您同样有帮助:

已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

王太术

银虫 (小有名气)

祝好运
2楼2015-05-20 09:40:46
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

咖喱VS土豆

荣誉版主 (文坛精英)

文献杰出贡献

【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
感谢参与,应助指数 +1
蔡静蔡静: 金币+20, ★★★很有帮助, 谢谢你 2015-05-20 12:51:29
This paper studies the long-term fertilization of organic manure and chemical fertilizer on apple orchard soil physical and chemical properties, the results show that the long-term application of chemical fertilizer longer-term organic apple orchard soil pH value is low 7%; Long-term application of chemical fertilizer apple orchard soil organic carbon, total nitrogen, total potassium and ammonium nitrogen, available potassium content and organic compared with no significant difference; But the long-term application of chemical fertilizer apple orchard soil total phosphorus, available phosphorus, nitrate nitrogen content is significantly higher than that of organic, increase 236.1%, 204.4%, 236.1%; Long-term application of chemical fertilizer decreased the tree p absorption and utilization, lead to the accumulation of a lot of p in soils, eventually lead to the loss of phosphorus removal.
天道酬勤
3楼2015-05-20 10:57:05
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 蔡静蔡静 的主题更新
信息提示
请填处理意见