洋葱新品种介绍洋葱系百合科葱属的一个栽培品种，为二年生草本植物。普通洋葱按鳞茎膨大对日照的要求可分为长日型和短日型两类。按鳞茎外皮颜色可分为黄皮、红皮（紫皮）、白皮三类。上海地区洋葱一般在９月中下旬育苗，播期不能过早，以免先期抽薹。一般在１１月下旬至... Introduction of new varieties of onion Onion Liliaceae Allium is a cultivated varieties of biennial herbs. Ordinary onion bulbs by sunlight on the requirements can be divided into long-day and short-day type. Bulb skin color can be divided into yellow, red (purple), white three categories. Shanghai onion generally in late September nursery, sowing date can not be premature, so as not to pre-bolting. Generally in late November to ...