土壤调理剂不同用量对木薯产量和土壤理化性状的影响.pdf

南方农业学报 journal of Southern Agriculture2017,48(4):623-627
ISSN2095-1191: ODEN NNXAAB
hllp://www.nfnyxl.com
D)0:10.35969/.isn.2095-1191.2(017,04.009
土壤调理剂不同用量对木薯产量和
土壤理化性状的影响
韦婉羚',罗兴录2,李亮,朱艳梅,樊吴静
(广西大学农学院,南宁530004;:2亚热带农业生物資源保护与利用国家重点实验室,南宁530004)
摘要:【目的]研究土壤调理剂不同施用量对连作木薯地土壤理化性质和木薯产量及其性状的影响,为木薯的高
产栽培提供理论依据。【方法J以本薯品种新选048为试验材料,设置0(CK)、750(A)、1500(B)和2250kg/ha(C)共4个
处理,测定土壤调理剂不同用量处理下的上壤水含率、孔隙度、三相比、速效氮、速效僯、速效钾、有机质含量及本薯产
量的相关性状。(结果]施用土壤调理剂处理与CK相比,土壤水含率差异不显著(P>0.05)。施用土壤週理剂的3个处理
均能增加土壤的孔隙度,降低土壤固相比例,增加气相比例,其中以2250kgha用量的效果最佳。講理剂能增加土壤中
碱解氮、速效僯、速效卸和有机质含量,施用量为1500?2250kgha能显著增加木薯块根长及単株块根重,从而提高块
根产量。【结论]土壤週理剂可改善土壤物理性状,促进土壤养分有效化,促进木薯块根伸长增粗,增产效果明显,其
中,施用量为1500和2250kgha的处理效果相对较优,在广西木薯生产上具有一定的推广价值。
关键词:木薯;土壤満理剂;上壤理化性状;产量;产量性状;有机质
中图分类号:S33.01
文献标志码:
文章编号:2095-1191(2017)04-(0623-05
Cassava yield, and soil physical and chemical properties under
different application rates of soil conditioners
WEI Wan-ling, LUO Xin-lu", LI Liang, ZHU Yan-mei, FAN Wu-jing
(College of Agriculture, Guangxi Universit, Nannin 530004, hina; tae K Bora or for Conseration and Utilization
of Subtropical Agre-bioresourees, Nanning 530004, China
Abstract: [Objective Effects of soil conditioners with different application rates on physical and chemical properties of
continuous cropping soil and the yield of cassava were studied in this experiment, in order to provide theoretical basis for
high-yield cultivation of cassava. [Method Cassava variety Xinxuan 048 was taken as material. Four treatments, 0(CK)
750(A), 1500(B) and 2250 kg/ha(C), were set. The moisture content, porosity, three phase ratio, available nitrogen
available phosphorus, available potassium, organic matter and traits related to yield were determined under different app
lication rates of soil conditioners. Result There was insignificant difference in soil moisture content between soil condi
tioner treatments and CK(P>0.05). In three soil conditioner treat ments, soil porosity and soil gas phase proportion were
increased and soil solid phase proportion was decreased, and 2250 kg/ha treatment had the optimal effects. Contents of al
kaline hydrolysis nitrogen, available phosphorus and available polassium and organic maller of soil were also inereased by
soil conditioners. 1500 and 2250 kg/ha soil conditioners could obviously improve length of root tuber and weight of root tu
ber per plant, and eventually enhaneed cassava yield. I Conclusion]Soil physical properties and nutrient can be improved
by soil conditioners. Cassava root tubber can be enlarged and elongated, thus the yield is improved obviously. Among all the
treatments, 1500 and 2250 kg/ha treatments present the optimal effects and can be promoted in cassava planting in Guan:
Key words: cassava; soil conditioner; soil physical and chemical property; yield; yield trait; organic matter
0引言
济作物之一,多年来木薯高产是众多研究者追求的目
研究意义木薯是热带及亚热带地区的重要经标。木薯产量与土壤营养状况密切相关,多年连作会
收稿日期:2016-06-06
基金项目:国家现代农业产业体系广西薯类产业创新团队项目( nycytxexcxtd-03-11-2);广西科学研究与技术开发计划项目(桂
科重14121005-2-1);南宁市科学研究与技术开发计划项目(20110904B,20132307)
作者简介:#为通讯作者,罗兴录(1957-),博士,教授,博士生导师,主要从事木薯育种与栽培生理研究工作,E-mail: luoxinglu(
sina.com韦婉羚(1991-),研究方向为作物栽培学与耕作学,E-mail:hxwx1991@163.com
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