当前位置: 首页 > 文章 > 土壤炭改良剂对沙化土壤及作物生长的影响 湖南农业科学 2018 (3) 53-56,62
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土壤炭改良剂对沙化土壤及作物生长的影响

作  者:
律其鑫;王桂君;夏霜;赵宇宸;张志鑫;王楠
关键词:
生物炭;有机肥;沙化土壤;理化性质;生长指标
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.
作  者:
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;
关键词:
biochar;;organic fertilizer;;sandy soil;;physical-chemical properties;;growth index
摘  要:
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 p H 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.

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