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研究了北方农牧交错区垄沟集雨种植措施对老芒麦Elymus sibiricus生长发育的影响。覆膜垄沟集雨种植可以使有限降雨在沟内富集累加,垄面径流效率达到80%左右。老芒麦2008和2009年营养生长阶段,处理间高度差异显著。2008年处理1和CK相比,株高提高33.5%~61.3%;处理2和CK相比,株高提高20.1%~44.1%,处理1与处理2相比,株高提高9.2%~16.2%。2009年处理1与CK相比,株高提高93.2%~116.4%;处理2与CK相比,株高提高65.4%~82.3%;处理1与处理2相比,株高提高12.1%~19.4%。处理1、处理2与CK三者在密度方面差异不尽相同,总体表现出处理2和处理1老芒麦密度高于CK,2008年密度动态变化和单株分蘖数变化保持一致,2009年返青后,呈现出整体略微下降趋势,趋于稳定。
The effects of furrow planting on the growth and development of Elymus sibiricus in the ecotone between agriculture and animal husbandry were studied. Catchment ditch rainwater harvesting can make the limited rainfall accumulate in the ditch, and the ridge runoff efficiency reaches about 80%. Siberged maize 2008 and 2009 during the vegetative growth stage, the height difference between the treatment significantly. Compared with CK, the plant height increased by 33.5% -61.3% in 2008 compared with CK. The plant height increased by 20.1% -44.1% in treatment 2 compared with CK, and the plant height increased by 9.2% -16.2% in treatment 1 and treatment 2, . Compared with CK, the plant height increased by 93.2% ~ 116.4% in 2009 compared with CK. The plant height increased by 65.4% ~ 82.3% in treatment 2 compared with CK. The plant height increased by 12.1% ~ 19.4% in treatment 1 and treatment 2, . Treatment 1, Treatment 2 and CK in the density of the three different, the overall performance of treatment 2 and treatment 1 Miscanthus density is higher than the CK, the dynamic changes in density and tiller number per plant in 2008 consistent with the change in 2009 green After showing a slight downward trend as a whole, tends to be stable.