摘要
采用大田试验,设置不施改良剂(CK)、单施生物炭(BC)、单施有机肥(CP)、低炭/肥共施(BC5+CP)、高炭/肥共施(BC10+CP)5个不同处理,以研究其对沙化土壤及作物生长的影响。结果发现:BC5+CP、BC10+CP吸湿水含量及电导率明显高于CK,且能降低土壤pH值,增加土壤有机碳、磷、钾等养分含量;作物生长方面,BC5+CP、BC10+CP能显著增加作物株高、茎粗及生物量,BC5+CP对叶绿素的影响高于BC10+CP,但产量方面BC5+CP略有不足。研究表明:炭肥共施能够起到良好的协同作用,且生物炭高比例投入下效果最为显著。
A field experiment was conducted to study effects of soil carbon ameliorant on sandy soil and crop growth by setting up five different treatments:without any ameliorants(CK),single applied of biochar(BC),single applied of organic fertilizer(CP),mixed applied of low biochar/fertilizer(BC5+CP),mixed applied of high biochar/fertilizer(BC10+CP).The results showed that the hygroscopic water and electrical conductivity of BC5+CP and BC10+CP were obviously higher than that of CK,it reduced the pH of soil and increased the content of soil organic carbon,phosphorus,potassium and other nutrients;In terms of crop growth,BC5+CP and BC10+CP could significantly increase plant height,stem diameter and biomass,the influence of BC5+CP on chlorophyll was higher than that of BC10+CP,but BC5+CP was slightly deficient in yield.The results showed that the co-application of carbon fertilizer can play a good synergistic effect,and the high proportion of biochar has the most significant effect.
作者
律其鑫
王桂君
夏霜
赵宇宸
张志鑫
王楠
LV Qi-xin;WANG Gui-jun;XIA Shuang;ZHAO Yu-chen;ZHANG Zhi-xin;WANG Nan(College of Urban and Environmental Sciences,Changchun Normal University,Changchun 130032,PRC)
出处
《湖南农业科学》
2018年第3期53-56,62,共5页
Hunan Agricultural Sciences
基金
吉林省教育厅"十二五"科学技术研究项目(2015-366)
吉林省大学生创新创业训练计划项目(201710205140)
关键词
生物炭
有机肥
沙化土壤
理化性质
生长指标
biochar
organic fertilizer
sandy soil
physical-chemical properties
growth index
