【摘要】 本试验在大田群体条件下,研究了UV B辐射增加对黑麦草营养生长和干草产量的影响。结果表明,UV B辐射强度增加导致黑麦草的茎、叶干重显著下降;UV B辐射增加对黑麦草根、茎、叶的生长有显著的抑制效应;UV B辐射增加对黑麦草三叶期前的幼苗生长无显著影响。更多还原

【Abstract】 <Abstrcat> Growth and production of L.perenne in response to enhanced ultraviolet-B radiation (UV-B) under the field condition was studied, results show that the production of L.perenne decreased significantly by enhanced UV-B radiation, and the growth of root, stem and leaf was also inhibited significantly. But the growth of seedlings is not influenced significantly by enhanced UV-B radiation before three-leaf stage. The experiment indicate that the effect of enhanced UV-B radiation to pasture is worth to pay more attention.更多还原