Effects of Different Nitrogen Treatments on N use Efficiency and Grain Yield of Mechanically-transplanted Hybrid Rice

In the 21st Century, factors including economic development, increase of urbanization rate and shortage of farm labor in the rural areas all have con-tributed to transformation of hybrid rice planting 12 Л On the other hand, agriculture production cost for seeds, fertilizers and pesticides rises, an...

Full description

Saved in:
Bibliographic Details
Published inHunan agricultural science & technology newsletter : HASTN Vol. 18; no. 2; pp. 274 - 293
Main Authors Ye, Chang, Liu, Ke, Liu, Shaowen, Lu, Jian, Gao, Mengtao, Lu, Bilin, Zhang, Yunbo
Format Journal Article
LanguageChinese
English
Published Changsha Wu Chu (USA-China) Science and Culture Media Corporation 01.02.2017
Subjects
Accumulation
Agricultural economics
Agrochemicals
Crop yield
Cultivars
Dry matter
Economic development
Efficiency
Experiments
Fertilizers
Grain
Nitrogen
Nutrition
Oryza
Pesticides
Physiology
Planting
Production costs
Rice
Rural areas
Seeds
Urbanization
China
Online AccessGet full text

Cover

More Information
Summary:In the 21st Century, factors including economic development, increase of urbanization rate and shortage of farm labor in the rural areas all have con-tributed to transformation of hybrid rice planting 12 Л On the other hand, agriculture production cost for seeds, fertilizers and pesticides rises, and the benefit from planting rice is much lower than before141. Results and Analysis Effect of N application levels on grain yield of hybrid rice The difference in grain yield between Ni and N2 was not significant, and the yield gap between the 2 cultivars underthe 3 N treatments was also insignificant. Effect of N application levels on yield components of hybrid rice The effective panicles and spikelets per panicle of Quanliangyou 1 and Quanliangyou 681 increased with the amount of N increasing, but the grain filling rate and grain weights of the 2 cultivars dropped. Effects of N application levels on dry matter accumulation and Nuse efficiency of hybrid rice The differences in dry matter accumulation between full heading and maturity under the 3 N treatments was significant.
ISSN:1009-4229