刈割、AM真菌和施磷对根箱栽培中柑橘和柱花草生长的影响

利用根箱栽培模拟果园生草栽培，以柑橘Citrus sinensis(L)Osbeck．cv．Luogangcheng和柱花草Stylosanthes gracilis H．B．K．cv．Graham来研究生草刈割、AM真菌和施磷在减轻养分竞争上的作用．结果表明，3种措施在不同程度上减轻了柱花草对柑橘生长的抑制效应，增加了柑橘的株高、叶片数和干质量；柱花草刈割的作用最明显，导致柱花草的根冠比急剧降低，表明刈割可能是通过抑制根系生长来减轻养分竞争．

Effects of mowing, AM fungal inoculation and phosphorus application on growth of Citrus sinensis and Stylosanthes gracilis in a rhizobox

Rhizobox was employed to stimulate the sod culture orchard, with Citrus sinensis and Stylosanthes gracilis as plant material. The effects of grass mowing, arbuscular mycorrhizal inoculation and P application on minimizing the competition between fruit tree and grass were investigated. Results indicated that 3 practices alleviated the inhibiting effect of grass on citrus at different magnitude, leading to increased plant height, leaf number and dry matter. Grass mowing took the greatest effect among 3 practices, resulting in a sharply decreased (R/S,) which implied a mediated nutrient competition following inhibition of root growth by grass mowing.