Multiple-effects of cultural factors on the yield and grain quality of malt barley.
1988
Zhao Decai | Tang Zongkui | Zhu Fengtai
In a study of the effects of 5 cultural factors on grain yield (GY), 1000-grain weight (GW) and grain protein content (GP) of malt barley, early sowing (in Oct. 13-Nov. 12) ensured a seedling population of 60-220 thousands/mu. Early N application affected GY positively but had a negative effect on GW and GP. GY and GP increased with the increasing rate of N application within the limit of 20 kg/mu. GW showed a quadratic response to applied N. The ratio of base-topdressing N had insignificant effects on GY, GW and GP, GY was negatively correlated with GW under various conditions, whereas, the correlations among GY, GW and GP depended on the related factors considered. The effects of the 5 factors on GY, GW and GP were in the following order: N application rate > sowing date > time of N application > seedling population > ratio of base-topdressing N fertilizers.
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