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为高效利用天然降水资源,缓解干旱逆境因子对旱地小麦的不利影响,在山西洪洞、闻喜采用大田对比方法,开展了黄土丘陵区旱地小麦膜侧条播种植模式增产效应试验与示范。结果表明:在严重干旱年型条件下,2个试验示范点的2种覆膜种植模式均较露地条播小麦增产,2种覆膜种植模式中1膜4行优于1膜2行,2种覆膜种植模式增产的原因主要来自于穗粒数的增加和千粒重的提高;土壤水分测定表明,在小麦起身期2种覆膜模式0~60 cm土壤水分明显优于露地麦田,其中1膜2行模式的土壤水分优于1膜4行模式;该试验示范为旱地冬小麦抵御干旱逆境提供了理论和技术支撑。
In order to make efficient use of natural precipitation resources and alleviate the adverse effects of drought stress factors on dryland wheat, a field experiment was conducted in Hongdong, Wenxi, Shanxi to test and demonstrate the yield-increasing effect of wheat sowing on plastic film in dryland in the loess hilly region. The results showed that in the severe drought years, the yield of two kinds of plastic film mulching in two experimental plots was higher than that in open-field mulching. In the two kinds of plastic film mulching patterns, 1 film 4 lines was better than 1 film 2 lines and 2 kinds The main reason for the increase of plastic film mulching pattern was the increase of grain number per spike and the increase of 1000-grain weight. Soil moisture measurement showed that soil moisture of 0 ~ 60 cm soil layer of 2 kinds of plastic film mulching pattern was better than open field wheat field, The soil moisture in row mode is better than that in 1-row and 4-row mode. This experiment provides theoretical and technical support for drought-resistant winter wheat against drought stress.