不同烟麦套种模式对烟田环境及烟株生长发育的影响

研究了不同烟麦套种模式对烟田土壤水分、温度及烟株生长发育的影响.结果表明:3种烟麦套种模式烟田土壤温度和土壤含水量均低于纯作;烟麦套种影响了烟株地上部和地下部生长发育,移栽后30 d表现明显,套种烟株的叶片数、株高、茎围、根系侧根数及干物质积累量均差于纯作.烟株生长发育由好到差表现为纯作、5-2式烟麦套种覆盖地膜、2-...

Effects of Different Relay Cropping Models on the Soil Conditions of Tobacco Fields and the Growth of Flue-cured Tobacco

Effects of three different relay cropping models on soil condition of tobacco fields and the growth of flue-cured tobacco were studied.The results showed that the soil temperature and soil water contents in three planting models of flue-cured tobacco relay cropping after winter wheat were all lower than that of the monoculture of flue-cured tobacco.Flue-cured tobacco relay cropping after winter wheat had bad effects on tobacco overground and underground growth,which was showed 30 days after transplanting.Monoculture was the best,secondly 5-2 model with film,2-1 model without film worst.Flue-cured tobacco inter-cropping with wheat had distinct impact on preventing tobacco virus disease,compared with monoculture of flue-cured tobacco,especially in the high happening year of tobacco virus disease.So flue-cured tobacco inter-cropping with wheat could be a planting model of safeguard.