| To investigate the feasibility of interplanting herbage production under forest and the influence of interplanting on the orchard soil, herbage yield, root distribution, nutritional quality of forage grasses interplanting with fruit
trees in Tarim special fruit producing areas of southern Xinjiang and its impact on soil orchard were studied. The results
showed that, the herbage yield of tall fescue (Festuca elata), orchardgrass (Dactylis glomerata), perennial ryegrass (Lolium perenne) and sudan grass (Sorghum sudanense) interplanted with mature pear fruit trees were 5.45, 3.62, 4.71, 11.12 t/hm2, respectively. Sweetclover (Melilotus suaveolens), alfalfa (Medicago sativa), sudan grass, Italian ryegrass (L. multiflorum) interplanted with jujube fruit trees could be mowed three times a year, the herbage yields reached 9.20, 8.78, 14.33, 7.58 t/hm2, respectively. More than 90% of the underground roots of all forages were concentrated within 20 cm of soil. Soil organic matter and total N, P, K content were higher than those in clean tillage area. Sparse fruit trees interplanted with forage grass could guarantee a certain herbage yield and quality, there was no obvious negative effect on soil properties of orchard root layer, and provide a scientific basis for the effective utilization of orchard. |
