Changes of Stem Characteristics, Senescence Indexes and Yield and Quality of Wintering Rye under Different Populations

In response to the production crisis caused by a winter feed shortage due rapid development of animal husbandry industry, rye 001 was selected study differences in stalk and senescence characteristics yield formation cold regions. Five density treatments were established randomized design as 225 × 104 plant·hm−2 (D1), 275 (D2), 325 (D3), 375 (D4), 425 (D5). Stem characteristics, SOD activity, POD MDA content, feeding quality under different population densities analyzed. The plant height, center gravity, stem basal internode length showed an increasing trend with increase planting density. wall thickness, diameter, strength, lodging resistance indices decreased. At plants·hm−2, crude protein content highest while neutral washing fiber acid lowest, best. With density, spike number, grain number per spike, thousand-grain weight first increased then We concluded that best when basic seedling at plants hm−2.