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以湖北省咸宁市贺胜桥镇上孟村农田生态系统为研究对象 ,分析了当地油 /豆 稻、麦 /瓜 稻、油 /玉米 大豆、小麦 芝麻、大豆 芝麻等 5种种植方式的B素平衡 .结果表明 ,农田B素的输出主要是径流和淋溶 ,它们分别占总输出的 48%～ 5 3 %和 41% ,由产品输出的量相对较小 ,只占总输出的 3 .4%～ 10 .1% .当地农田B素输入主要有降雨、灌溉、施肥、种子种苗和自然归还
Taking the farmland ecosystem of Shangmeng Village, He Shengqiao Town, Xianning City, Hubei Province as the research object, the B - balance of five planting ways including local oil / bean, wheat / melon, oil / corn, wheat sesame and soybean sesame was analyzed. The results showed that the output of B element in farmland was mainly runoff and leaching, accounting for 48% ~ 53% and 41% of the total output, respectively. The output of B element from farmland was relatively small, accounting for only 3.4% 10.1%. Local farmland B inputs mainly include rainfall, irrigation, fertilization, seed seedlings and natural return