冷型小麦灌浆期株间温、湿度的分析

Analysis of temperature and humidity in rows of cold type wheat during milk-filling

根据农田小气候观测资料 ,分析了冷型小麦陕 2 2 9和对照品种 9430的农田株间温、湿度 ,用 M.и布德柯法计算了株间的湍流热通量和潜热通量。结果表明 ,在灌浆期冷型小麦陕 2 2 9比 9430株间气温低 0 .1～ 1 .9℃ ,湍流热通量低 8.89～ 48.47J/(m2·s) ,株间水汽压和相对湿度分别高 2 0～ 2 2 0 Pa和 1 %～ 1 1 % ,潜热通量高 1 9.85～ 2 4 0 .2 3J/(m2 · s) ,即冷型小麦的株间环境具有冷湿的特征。这一特征有利于抗御小麦灌浆期干热天气的危害。

Based on the observed data of farmland microclimate,this paper analyses temperature and humidity in the field of cold-type wheat Shaan 229 and 9430 (ordinary type wheat).The turbulent heat flux and latent heat flux in rows are calculated with М.и.ъудыко method.The results show that the air temperature of Shaan 229 in row is \{0.1-1.9 ℃\} lower than 9430 during milk-filling and the turbulent heat flux in row decreases 8.89-48.47 J/(m2·s) compared with 9430.The water-vapour pressure,the relative humidity and the latent heat fiux of Shaan 229 are 20-220 Pa,\{1%-11%\} and 19.85-240.23 J/(m2·s) higher than 9430,respectively.In other words,the environmental characteristics of the cold type wheat are cooler and wetter in row.This characteristics are favorable to resist the dry-hot weather during milk-filling of wheat.