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

Yuetao Zuo, Xueyue Zhang, Shiyu Zuo, Xiaosong Ren, Zhaoyue Liu, Ling Dong and Jing Li
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Yuetao Zuo: College of Agriculture, Northeast Agricultural University, Harbin 150030, China
Xueyue Zhang: College of Agriculture, Northeast Agricultural University, Harbin 150030, China
Shiyu Zuo: College of Agriculture, Northeast Agricultural University, Harbin 150030, China
Xiaosong Ren: College of Agriculture, Northeast Agricultural University, Harbin 150030, China
Zhaoyue Liu: College of Agriculture, Northeast Agricultural University, Harbin 150030, China
Ling Dong: College of Agriculture, Northeast Agricultural University, Harbin 150030, China
Jing Li: College of Agriculture, Northeast Agricultural University, Harbin 150030, China

Sustainability, 2021, vol. 13, issue 12, 1-11

Abstract: In response to the production crisis caused by a winter feed shortage due to the rapid development of the animal husbandry industry, winter rye 001 was selected to study differences in stalk and senescence characteristics in yield formation in cold regions. Five density treatments were established in a randomized design as 225 × 10 4 plant·hm −2 (D 1 ), 275 × 10 4 plant·hm −2 (D 2 ), 325 × 10 4 plant·hm −2 (D 3 ), 375 × 10 4 plant·hm −2 (D 4 ), and 425 × 10 4 plant·hm −2 (D 5 ). Stem characteristics, SOD activity, POD activity, MDA content, and differences in yield and feeding quality under different population densities were analyzed. The plant height, center of gravity, and stem basal internode length showed an increasing trend with an increase in planting density. The stem wall thickness, diameter, strength, and lodging resistance indices decreased. At 275 × 10 4 plants·hm −2 , the rye crude protein content was the highest while neutral washing fiber and acid washing fiber were the lowest, and feed quality was the best. With an increase in density, spike number, grain number per spike, and thousand-grain weight first increased and then decreased. We concluded that the yield and feeding quality were best when the basic seedling was at 275 × 10 4 plants hm −2 .

Keywords: aging indexes; output; planting density; stem characteristics; winter rye (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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