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【目的】探讨竹鼠粪便还田对牧草产量、土壤物理性质、土壤化学性质的影响。【方法】试验设5个处理:施用堆沤过的竹鼠粪便量(干重)7.5t/hm~2、15t/hm~2、22.5t/hm~2、30t/hm~2和对照不施肥五个水平,每个处理三个重复,随机区组排列。【结果】施用竹鼠粪便的牧草鲜重比对照增产了36.3%-92.4%,土壤有机质含量比对照增加了15.4%-41.2%;可以减少土壤小于0.25mm的水稳性团粒结构体,增加>0.25mm的水稳性团粒结构体;【结论】竹鼠粪便还田能够显著提高桂牧一号的鲜草产量,施用量为22.5t/hm~2时,增产效果最显著;在0-30t/hm~2的施用竹鼠粪便还田的范围内,随着施肥量的增加,牧草地土壤有机质含量、水稳性土壤团粒结构体数量、土壤阳离子交换量明显增加,土壤容重明显降低;不同的施肥水平条件下,牧草地土壤的全氮、全磷、全钾以及速效氮、磷、钾的含量增加,且差异显著。这种清洁生产、低投入高产出的生产模式,是今后农业生产发展的方向。
【Objective】 The objective of this study was to investigate the effects of bamboo shoot excrement returning on pasture production, soil physical properties and soil chemical properties. 【Method】 Five treatments were used in this experiment: the amount of bamboo stool (dry weight) 7.5 t / hm ~ 2, 15 t / hm ~ 2, 22.5 t / hm ~ 2, 30 t / hm ~ 2 and control Fertilization five levels, each dealing with three repetitions, random block arrangement. 【Result】 The results showed that the fresh weight of forage grasses increased 36.3% -92.4% and soil organic matter content increased 15.4% -41.2% compared with the control. The water-stable aggregate structure with soil less than 0.25mm could be decreased and the increase> 0.25mm of water-stable aggregate structure. 【Conclusion】 Bamboo sticks can increase the fresh grass yield of Gui-Mu-1 on the one hand, and the yield increase is the most significant at the rate of 22.5t / hm ~ 2. / hm ~ 2, the contents of soil organic matter, the number of water-stable soil aggregates and soil cation exchange capacity increased obviously and the soil bulk density decreased obviously with the increase of fertilization amount; The content of total N, total phosphorus, total potassium and available nitrogen, phosphorus and potassium in the pasture soil increased significantly, and the difference was significant. This clean production, low input high-yield production model is the future direction of agricultural development.