Archive > Volume 28 Issue 5 > 2020,28(5):137-141. DOI:10.13597/j.cnki.maize.science.20200520 Prev Next
Study on the Grain Mechanical Harvesting Quality of Jingnongke828 in Jing-Jin-Ji Summer Maize Area
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Abstract:
In this experiment, Jingnongke828 (National registration 20190009) was used as the research material. Research on the mechanical grain yield quality of Jingnongke828 was carried out in Jing-Jin-Ji area, to provide technical support for the demonstration and promotion of the variety. The results showed that, Jingnongke828 was able to reach physiological maturity normally from September 21 to October 12 from June 1 to 20. The average growth period of Jingnongke828 was 107 d. The average moisture content of Jingnongke828 is 25.5% at 9-15 d after physiological maturity; the average broken rate, average impurity rate and grain loss rate of Jingnongke828 is 4.3%, 2.0% and 3.5%. The average yield of Jingnongke828 was 10 559.8 kg/ha, and the highest yield is 11 373.0 kg/ha at the Beili village, Dongshiduan, Xushui county, Hebei province. The yield of Jingnongke828 was negatively correlated with the field loss rate(r=-0.61**, n=22). There was a very significant positive correlation between the moisture content and the percentage of broken grains(r=0.80**, n=22), and a significant positive correlation between the moisture content and the percentage of impurities(r=0.45*, n=22), which indicated that the moisture content of grains was the main factor affecting the mechanical grain yield quality of maize.
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Clc Number:
S513.091
