| Effects of delayed harvest on production of maize in loess area |
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| DOI：10.7606/j.issn.1000-7601.2013.01.11 |
| Key Words: maize delayed harvest yield-increasing effect |
| Author Name | Affiliation | | HAO Mingde | Institute of Soil and Water Conservation, Northwest A&F University, Yangl
ing, Shaanxi 712100, China | | XIE Yongsheng | Institute of Soil and Water Conservation, Northwest A&F University, Yangl
ing, Shaanxi 712100, China | | BAO Yanjie | College of Agronomy, Northwest A&F University, Yangling, Shaanxi 712100, China | | HUANG Yaoming | Baoji Agricultural Machine Management and Extension Center, Baoji, Shaanxi 721
006, China |
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| Abstract: |
| The experiment was conducted to analyze the effect
s of delayed harvest on the grain weight per plant, 1000-grain weight and dry m
atter transport in plant organs of maize. The results show that reasonable delay
ed harvest could produce an obvious yield-increasing effect. When the harvesting
time was delayed for 15 days, the transport amount of dry matter from plant org
ans of spring and summer maize was 28.89 g and 23.81 g respectively, and the con
tribution rate of leaves and stem to grains was about 80%. For spring maize, the
grain weight per plant increased 29.2 g, the daily increase of grain weight per
plant was 1.95 g, the 1000 grain weight increased 53.8 g, the daily increase o
f 1000-grain weight was 3.58 g, the yield increased 1 336.5 kg·hm-2, and the increase rate of yield was 16.6%; for summer maize, the grain weight per plant in
creased 31 g, the daily increase of grain weight per plant was 2.1 g, the 1000-grain weight increased 81.7 g, the daily increase of 1000-grain weight was 5.5 g, the yield increased 1 488.0 kg·hm-2, and the increase rate of yield wa
s 18.9%. |
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