关键词: 强筋小麦, 敏感系数, 沉淀值, 拔节?抽穗期, 平均最高气温

Abstract: In order to improve the pertinence of meteorological services for high-quality wheat, according to quality measurement data of 6 strong gluten and medium strong gluten wheat varieties, 287 wheat samples from 72 counties in Henan province during 2017−2019, as well as corresponding meteorological and wheat growth period observation data, analytical methods as Person correlation, LSD multi comparison and sensitive coefficient, et al., were used to confirm the key meteorological factors that influence the planting quality of strong gluten wheat in Henan province. The results indicated that, except the south of southern Henan and western Henan area, it was suitable to develop high-quality strong gluten wheat in most areas of Henan province. 6 quality indexes as hardness index, crude protein etc. were affected by the meteorological conditions after jointing to different degrees, among them, air temperature and sunshine hours at jointing-heading and mature-harvest stage had significant effect on most quality indices, air temperature and sunshine hours at flowering-grain filling stage mainly affected hardness index, sedimentation value and water absorption, and at mature-harvest stage, precipitation had negative effect on flour water absorption. Comparing the absolute value of sensitive coefficient SV_(i), the sedimentation value was the most sensitive to the average maximum air temperature at jointing-heading stage, SV_(i) reached to 0.7954. For different developmental stages, the key meteorological factors for planting quality reaching the standard of strong gluten wheat were as follows: average maximum air temperature, air relative humidity and sunshine hours at jointing-heading stage, air relative humidity at flowering-grain filling stage, and average air temperature at mature- harvest stage. The results explained that the most important meteorological factors effecting the planting quality of strong gluten wheat was air temperature.

Key words: Strong gluten wheat, Sensitive coefficient, Sedimentation value, Jointing-heading stage, Average maximum temperature