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1 定型品种的种子生产1.1 采种方法莴苣一般以秋季播种、定植,冬季保护越冬,次春采种,或冬春阳畦育苗,3月份定植,于露地采种。叶用莴苣华北地区主要采用春播留种,华南地区用秋播留种。1.2 种株定植和田间管理莴苣为白花授粉作物,但也可发生自然杂交,定植时不同变种和品种问要间隔500m 以上。莴苣种株的播种和苗期管理与菜用栽培基本相同。
1 stereotypes of seed production 1.1 Seed Collection Methods Lettuce generally sow in autumn planting colonization in winter, winter protection, the next spring seedlings, or winter spring barley nursery, planting in March, in the open field seed. Leaves with lettuce in North China mainly by spring seeding to stay species, autumn planting in South China. 1.2 Strain Planting and Field Management Lettuce is a white-pollination crop, but natural crosses can occur as well, with different varieties and varieties spaced at least 500 m apart. The sowing and seedling management of lettuce strains are basically the same as the cultivation of vegetables.