摘要
试验旨在弄清寻甸县烤烟套种青贮玉米的适宜套种时间,为青贮玉米套种提供技术指导。试验设7月5日(处理1)、7月15日(处理2)和7月25日(处理3)3个青贮玉米套种时间,10月19日统一收割,对不同套种时间青贮玉米的产量、养分含量和玉米收割后土壤养分等指标进行测定。试验结果表明:青贮玉米的株高、鲜株产量、干鲜比和干物质产量随套种时间的延后呈显著下降趋势(P<0.05);随着种植时间的延后,青贮玉米的CP、NDF、ADL、CF、ASH呈逐渐升高趋势(P<0.05),ADF、Ca、P差异不显著(P>0.05),EE有明显波动(P<0.05),NFC呈下降趋势(P<0.05);玉米收获后,各处理的土壤养分仍处于较高肥力水平,3个处理间的有机质、全氮、全磷、全钾、有效磷、速效钾差异不显著(P>0.05),但空白处理(ck)的全钾显著高于3个处理(P<0.05)。综合青贮玉米的指标水平和下一茬作物对种植时间的要求考虑,在试验点及类似气候地区开展烤烟套种青贮玉米生产,青贮玉米的套种时间不宜晚于7月5日。
The aim of this experiment was to figure out the appropriate time of flue-cured tobacco interplanting with silage maize in Xundian county,and to provide technical guidance for interplanting silage maize.The experiment set three interplanting times of silage maize on July 5(treatment 1),July 15(treatment 2)and July 25(treatment 3),and the harvest was unified on October 19.The yield and nutrient content of silage maize and soil nutrient after maize harvest were measured at dfferent interplanting times.The experimental results show that:The plant height,fresh plant yield,dry/fresh ratio and dry matter yield of silage maize decreased significantly with interplanting time(P<0.05);With the delay of planting time,CP,NDF,ADL,CF and ASH of silage maize showed a gradually increasing trend(P<0.05),while ADF,Ca and P showed no significant difference(P>0.05),EE showed significant fluctuation(P<0.05),and NFC showed a decreasing trend(P<0.05);Afer maize harvesting,soil nutrients of all treatments were still at a high fertility level.There were no significant differences in organic matter,total nitrogen,total phosphorus,total potassium,available phosphorus and available potassium among the three treatments(P>0.05),but the total potassium of blank treatment(CK)was significantly higher than that of the three treatments(P<0.05).Considering the index level of silage maize and the requirements of planting time for the next crop,we should carry out interplanting silage maize production in flue-cured tobacco field in test point and similar climate areas,and the interplanting time of silage maize should not be later than July 5.
作者
袁福锦
王安奎
欧阳青
吴文荣
陈万高
马真明
余树文
徐驰
李世平
马智
吴凤坤
高月娥
余梅
王馨
YUAN Fujin;WANG Ankui;OUYANG Qing;WU Wenrong;CHEN Wangao;MA Zhenming;YU Shuwen;XU Chi;LI Shiping;MA Zhi;WU Fengkun;GAO Yue'e;YU Mei;WANG Xin(Yunnan Academy of Grassland and Animal Science,Kunming 650212,China;Agriculture and Rural Affairs Bureau of Xundian County,Xundian 655200,China)
出处
《草学》
2023年第6期40-43,共4页
Journal of Grassland and Forage Science
基金
云南省寻甸县肉牛产业科技特派团(202104BI090024)
云南省现代农业草产业技术体系(2017KJTX0018)共同资助。
关键词
青贮玉米
烤烟
套种时间
寻甸县
silage maize
flue-cured tobacco
interplanting times
Xundian county
