EFFECT OF NITROGEN SUPPLY LEVEL IN SOIL ON MALT CHARACTERISTICS OF WINTER BARLEY GRAIN
CEREAL RESEARCH COMMUNICATIONS(2008)
摘要
In small-plot field experiment effect of various nitrogen levels in soil on grain yield and malt quality of winter barley (variety Barcelona and Babylone) was investigated during 3 years. At the end of tillering (DC 28-30) N-fertilization in doses calculated on the basis of inorganic nitrogen content in soil was performed. Increasing nitrogen supply in soil increased grain yield as well as crude protein content at both varieties and in contrary decreased content of starch in grain. Germination of grain was not affected by N level in soil significantly. Variety Barcelona showed higher resistance to N-nutrition and up to the soil level of 70 kg N ha(-1), grain of this variety proved acceptable malt parameters, particularly crude protein (10.8-11.5%), fermentable extract (78.5-79.1%) and Kolbach index (38.6-40.6%).
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关键词
winter barley,nitrogen fertilizing,crude protein,fermentable extract,soluble nitrogen,beta-glucans
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