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研究了南疆环塔里木特色林果产区果林行间套种生产牧草的干草产量、根系分布、营养品质及土壤相关性状,探讨林下套种牧草的生产可行性及对果园土壤的影响。结果表明:高大成龄香梨果林套种高羊茅、鸭茅、黑麦草和苏丹草干草产量分别为5.45、3.62、4.71、11.12 t/hm2;低矮红枣果林行间套种草木樨、大叶苜蓿、苏丹草、一年生黑麦草一年内可刈割3次,其干草产量分别达到9.20、8.78、14.33、7.58 t/hm2,且供试牧草地下根量的90%以上都集中在20 cm土层以内,果园生草后土壤有机质和氮磷钾含量均高于清耕区;稀植果林套种牧草可以保证一定的牧草产量和品质,对果林根层土壤性状无明显负面影响。
The hay yield, root distribution, nutritional quality and soil-related traits of intercropping the forages were determined in the fruit-tree intercropping forest in the Tarim community in southern Xinjiang. The feasibility of intercropped pasture production and the impact on the orchard soil were also discussed. The results showed that the yield of tall fengzao pear-fruit intercropping tall fescue, sodagrass, ryegrass and sudangrass were 5.45, 3.62, 4.71 and 11.12 t / hm2, respectively. Alfalfa, Sudan grass and annual rye grass can be mowed three times in a year, the hay yields reached 9.20, 8.78, 14.33 and 7.58 t / hm2 respectively, and more than 90% of the underground roots of test grass were concentrated in 20 cm soil layer Soil organic matter and NPK contents in the orchard were higher than those in the clear farming area. The intercropping of pasture with the thinned fruit trees could ensure the yield and quality of the pasture, and had no significant negative effect on the soil properties of the roots.