【作者】 常春；

【导师】 贾玉山； 格根图；

【作者基本信息】 内蒙古农业大学 ， 草业科学， 2010， 硕士

【摘要】 柠条具有防风固沙、耐受力强、营养价值高等多种优良特性,因此兼具较高的生态价值和饲用价值,但是长期以来传统的平茬方式仅仅重视其生态价值,忽视了其饲喂利用,造成了资源的大量浪费。本论文以生长在鄂尔多斯市鄂托克前旗三段地的柠条锦鸡儿为研究对象,进行了柠条生长季刈割关键技术的研究,最终确定了柠条生长季刈割的关键技术并对其效果进行了全方位的评定。具体结论如下:①适宜的方式方法下,柠条生长季刈割并不影响其生长情况,相反会促进柠条嫩枝的生长,降低其木质化程度,并且生长季刈割后的营养物质比传统平茬含量高,从而更有利于其生态治理效果和家畜的采食。②柠条生长季刈割频率不宜过于频繁,每隔1年刈割1次效果较好。③柠条生长季刈割的最适留茬高度为2~4cm,太低或太高均不利于枝条的分蘖与再生。④生长季刈割对柠条根部的贮藏营养物质有较为显著的影响,进而影响到柠条的返青和枝条的再生,但是就以上的最适刈割频率和最适留茬高度来说,其根部营养物质的贮藏量均可满足其再生植株和根系正常发育的需要。⑤柠条生长季刈割会影响到其土壤养分的含量,其中全氮、全磷、速效磷和速效钾的含量均随刈割频率的增大而减少,而全钾含量基本保持稳定。更多还原

【Abstract】 Caragana has a variety of good characteristics, such as wind and sand fixation, strong tolerance, and high nutritional value. So it has both the higher ecological value and feeding value. However, for a long time, the traditional cutting style only attach importance to its ecological value, but ignoring its feeding advantage. That resulting in the waste of resources. This paper take the Caragana that growth in Erdos Etuokeqianqi Sanduandi country as the study object, make the reaserch on the key technology of cutting Caragana during its growing season, and finally find the key technology of cutting Caragana during its growing season, moreover assessment its effect all-round. The conclusions are as follows:①The growing season cutting by appropriate ways does not affect the growth of Caragana. On the contrary, it will promote the growth of shoots and reducing its lignification. And its nutrients content is higher than the traditional cutting, thus it is not only conducive to the ecological management effects but also benefit to the livestock grazing.②The cutting frequency of Caragana in growing season should not be too often. It can be taken by once every other year.③The optimum stubble height of cutting Caragana in growing season is 2 ~ 4cm, too low or too high are not conducive to the regeneration of its tiller and shoot.④Cutting Caragana in growing season has a significant impact on the roots storage nutrition substance, thereby affecting its turning green and branches renewable. But the storage of nutrient in roots can meet the need for their normal development of regenerated plants and roots by the optimal frequency and stubble height mentioned above.⑤Cutting Caragana in growing season will affect the soil nutrient content. With the cutting frequency increased, the total nitrogen, total phosphorus, available phosphorus and available kalium content reduced, while the total kalium content remained stable.更多还原