啤酒厂污泥对土壤性质及甜菜生长的影响

Effects of Beer Factory Sludge on Soil Properties and Growth of Sugar Beet

研究了啤酒厂污泥(以下简称BFS)在甜菜(BetavulgarissacchariferaL.)上利用的可能性,BFS与土壤的混合比例分别是0,10,20,40,80和160t/hm2,研究表明:BFS对甜菜叶和根的产量都有影响,对叶的影响比根要大,最高的含糖量、矫正含糖量及产量的处理是BFS10t/hm2处理,10t/hm2啤酒厂污泥处理对块根的品质和质量来说是最佳处理;甜菜根的质量参数随BFS添加量的增加而降低,这表明矿物态氮与甜菜根的质量参数负相关,过量的氮刺激了甜菜的顶端生长而减少了糖的积累,光合能量被用来植物的生长而不是以糖的形式储存;另外,由于BFS中含有大量的有机氮需要矿化分解,应孵化6—7个月后再施用。

The possible use of beer factory sludge (BFS) for a purpose was investigated with sugar beet (Beta vulgaris saccharifera L.). BFS was mixed with soil at a rate 0, 10, 20, 40, 80 and 160 t/hm2. BFS increased leaf and root yield. However, the effect of BFS on leaf growth was more pronounced than on root growth. The highest sugar content, refined sugar content and refined sugar yield were obtained with the application rate of 10 t/hm2 BFS. 10t/hm2 of BFS was the most suitable on the basis of root quality parameters and root yield. However BFS should be applied to the soil six or seven months in advance due to the high level of nitrogen released through mineralization.