Detailed Explanation of Key Cultivation Techniques for Cauliflower-Type Vegetables

Cauliflower-type vegetables include: broccoli, daylily, rapeseed flowers, and others.

Field management of rapeseed flowers:

1. Clear away and remove freeze-killed buds and bolts, and apply nitrogen fertilizer promptly according to seedling condition. As rapeseed enters winter

2. Clear ditches and drain waterlogging, and dig three ditches. As temperatures have recently been rather low and rapeseed has generally suffered freezing damage, all localities should clear the three ditches well, especially in paddy-field rapeseed areas, to lower the groundwater level, reduce soil moisture content, raise soil temperature, and strengthen the rapeseed's own resistance.

3. Prevent diseases and pests. Spring came early this year. After the beginning of spring, the main diseases and pests of rapeseed in our province include sclerotinia rot and downy mildew as well as damage from aphids, with sclerotinia rot being relatively common; in addition, freezing damage to rapeseed is currently fairly widespread, with some stems split by frost. Besides working hard to deepen the three ditches and lower the groundwater level, attention should also be paid to broadly controlling sclerotinia rot at the early flowering stage.