Morphological Indexes of strong seedlings in Brassica napus

(agricultural Wealth net) the morphological index of strong seedlings of rape in winter is the number of green leaves per plant before winter (the end of December) is 10 to 12, and the leaf area index is about 1.5; the morphological index of autumn is that the number of green leaves per plant before winter is 12 to 14, the leaf area is 2.5 to 3, and the maximum leaf opening diameter is 50 cm, and the whole field has been closed. The winter seedling of rape has strong rhizome, strong growth, no bolting and early flowering, strong cold resistance, forming excellent seedling frame and steady growth trend, which lays a solid foundation for high yield of rape in spring.