论文部分内容阅读
通过在香梨成龄果林行间套种高羊茅、鸭茅、多年生黑麦草和苏丹草,与不种草对照区比较,研究果园套种对牧草产量和土壤相关性状的影响。结果表明,香梨套种高羊茅、鸭茅、多年生黑麦草和苏丹草的年干草产量分别为5 451.0、4 711.6、3 622.9与11 120.0 kg/hm2;供试牧草地下根量的90%以上都分布在0~20 cm土层,与对照区相比,香梨套种高羊茅、鸭茅、多年生黑麦草和苏丹草,土层0~30 cm的土壤含水量增加,土壤容重降低,土壤中速效磷、碱解氮和速效钾含量有增加趋势。香梨套种牧草不仅能保证牧草产量和品质,而且对果园土壤表层的水肥没有负面影响。
The effects of intercropping orchard intercropping on forage yield and soil-related traits were studied by intercropping tall fescue, sodagraria, perennial ryegrass and sudangrass in the rows of pear trees. The results showed that annual hay yields of pear cultivars, fescue, perennial ryegrass and sudangrass were 5 451.0, 4 711.6, 3 622.9 and 11 120.0 kg / hm2, respectively; Compared with the control plot, the pear was interplanted with tall fescue, sodagrass, perennial ryegrass and sudangrass, soil water content increased from 0 to 30 cm, soil bulk density decreased, soil Medium available phosphorus, available nitrogen and available potassium content increased. Fragrant pear intercropping pastures not only ensure pasture yield and quality, but also have no negative impact on the water and fertilizer on the surface of the orchard soil.