干理想大根地膜覆盖栽培技术研究

Study on Plastic Film Mulching Cultivation Technology of Raphanus Sativas L.

采用裂区设计,研究了播种期和地膜覆盖及两者交互效应对干理想大根产量的影响,确立了地膜覆盖条件下的适宜播期,并对增产机理进行了初步探索。结果表明：在郯城县气候条件下,实施地膜覆盖栽培干理想大根的最佳播种期为8月22日;地膜覆盖栽培可以改善土壤的物理性状,使出苗期土壤表层（0~10 cm）含水量增加1.6个百分点、采收期土壤容重较对照低0.05~0.10 g/cm3,使干理想大根单株产量增加11%,同时对产量相关性状和产品加工品质也具有同步促进作用。

The effects of sowing date,plastic film mulching and their interaction on the yield of Raphanus Sativas were studied using split plot design in Tancheng.The results showed that the optimum sowing date was August 22 with the plastic film mulching.The plastic film mulching could improve the soil physical properties,increase the water content of soil surface by 1.6 percentage point in seedling emergence stage,reduce the soil bulk density by 0.05-0.10 g/cm3 in harvest stage,increase the yield per plant by 11%,and improve the yield traits and processing quality.