免耕条件下泡田对土壤容重及水稻机插质量的影响  

Effect of water soaking duration on soil bulk density and the quality of mechanized transplanting of rice under no-tillage condition

作　　者：陈惠哲[1] 徐一成[1] 向镜[1] 张玉屏[1] 朱德峰[1] 

机构地区：[1]中国水稻研究所水稻生物学国家重点实验室,浙江杭州311006

出　　处：《扬州大学学报（农业与生命科学版）》2015年第3期79-82,共4页Journal of Yangzhou University：Agricultural and Life Science Edition

基　　金：国家科技支撑计划项目(2012BAD07B02);科技部技术开发研究专项(2013EG134237);浙江三农六方科技协作计划项目(SN201206)

摘　　要：免耕条件下,研究泡田时间对土壤容重及水稻机插质量的影响。结果表明：随着泡田时间的延长,土壤容重下降,免耕机插稻田泡田15d后,0-25cm表层的土壤容重可下降到0.89g·cm^-3,此时可达到较好的机插效果,免耕机插的秧苗种植深度在1.9cm,比传统翻耕机插浅37.5%,且漂秧率、翻秧率、伤秧率与传统机插对照无显著差异;综合考虑土壤容重、机插质量和产量等因素,免耕机插稻田需泡田10d以上;泡田时间不足,土壤没有充分软化,秧苗机插过浅,造成大量漂秧,影响机插效果及产量。The effects of water soak duration on soil bulk density and mechanized transplanting quality were studied under no-tillage condition.The results showed that the soil bulk density decreased with soak duration prolonging,the soil bulk density decreased to 0.89g·cm^-3 in 0-25 cm depth after 15 days soaking,the transplanting depth was 1.9cm in no-tillage field,and 37.5%lower than that in traditional tillage field.There was no significant difference in the percentage of floating seedling,lodging seedling and damage seeding between no-tillage and traditional-tillage treatment.In view of the effects of soil soak duration on soil bulk density,mechanized transplanting quality and yield of rice,the soil soak duration required more than 10 days.If soil soak time was not enough,bulk density in the surface soil layer was high for mechanized transplanting,which resulted in a large number of floating seedlings.

关 键 词：水稻 免耕 机插 泡田 土壤容重 

分 类 号：S511[农业科学—作物学]