陇东黄花菜越冬不同材料覆盖下的生长特性及气候效应研究

在分析陇东黄花菜的一般生长发育特性基础上,研究了黄花菜在越冬期不同材料覆盖(地膜覆盖、秸秆覆盖)下的生长特性和增温保墒效应。结果表明,采取越冬覆盖措施具有明显的增温保墒效应,其中地膜覆盖可有效提高土壤温度,降低土壤水分在黄花菜非生长季无效消耗,加快黄花菜发育进程,黄花菜长势较好,但产量低成本高;而秸秆覆盖可有效抑制春季土壤温度过快回升,减少土壤水分蒸发,延长黄花菜采摘期,产量高成本低。在陇东地区黄花菜栽培中应推广秸秆覆盖技术,减少传统种植方式。

Sudies on growth characteristics of Hemerocallis flaua in east Gansu under mulching with different materials during winter and the weather effects

The general growth characteristics of Hemerocallis flaua in east in Gansu is analyzed.At the same time,analysis is also made of the growth specific characteristics of Hemerocallis flaua under the mulching with different materials(plastic film and crop stalk) and its soil temperature-raising and moisture-keeping effects.The result show that adopting the measures of mulching during the winter has has obvious effects of raising soil temperature and keeping soil moisture.Mulching wtih plastic film can increase effectively soil temperature and reduce invalid soil moisture consumption during the non-growing season and thus enhance the growth progress of the vegetable,but finally result in a low yield and high cost.While muching wirh crop stalk can repress soil temperature rising too quickly in spring and reduce the soil moisture evaporation,prolonging the harvest period of yellow flower,so the yield is high and the cost is low.So to extend the techique of crop stalk muching can achieve high economic return with low cost.