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不同生态型花棒不仅在形态上存在显著差异,而且在一系列生物生态学特性上也有稳定差异。继花棒苗期蒸腾作用的研究之后,本文将从水分生理和生物量方面,探讨不同生态型花棒苗在抗旱性上的差异。一、试验地区自然条件试验在陕西省榆林县治沙站进行。榆林县城位于东经109°12′,北纬38°20′,海拔1100米左右。县治沙站在县城西北五华里处。据榆林县气象站多年观测资料,该地年平均气温为7.9℃,极端最高气温39.6℃,极端最低气温-32.7℃,≥10℃年积温为3217.6℃。全年日照时数2925.5小时。年平
Different ecotypes not only have significant morphological differences, but also have stable differences in a series of bioecological characteristics. Following the Huanghuagang seedling transpiration research, this article will be from the water physiology and biomass, to explore different ecological type of flower seedlings in drought resistance differences. First, the test of natural conditions in the pilot area in Shaanxi Province Yulin County sand control station. Yulin County is located east longitude 109 ° 12 ’north latitude 38 ° 20’, 1100 meters above sea level. County sand control station in the county northwest five Department. According to many years observation data of Yulin Meteorological Station, the annual average temperature is 7.9 ℃, the extreme maximum temperature is 39.6 ℃, the extreme minimum temperature is -32.7 ℃, and the annual accumulated temperature ≥10 ℃ is 3217.6 ℃. The annual sunshine hours 2925.5 hours. Flat