Effects of Different Land Preparation Method and Sowing Deep on Seedling Emergence of Directly Sowing Vegetables

[Objective] The aim was to explore the corresponding land preparation method and sowing deep of directly sowing vegetables.[Method]Taking Suzhouqing No.2 as tested variety,and using The Dutch AL-640-SNT Type Vegetable Precision Suction Seeder,4 kinds of land preparation method and 3 sowing deep were designed under 4 kinds of plants space(4.9,7.2,9.8,14.4 cm resp.) to study the effects of land preparation method and sowing deep on seedling emergence of directly sowing vegetables.[Result]Under different plants space,the treatment of rotary tillage 2 times and covering soil 1 file was most favorable of seedling emergence of directly sowing vegetables.[Conclusion]The study provides a technical reference for promoting directly sowing vegetables mechanized cultivation of Shanghai Farm in a large scale.