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由于制浆和造纸产量的增加和对最终产品质量要求的不断增长,我们工厂的工业废料也同步增加。这些废料的主要部分是从制浆厂澄清剂中排出的木纤维。这些废料对环境是一个问题,因为它们需要大场地来储存,同时还需要建设附属设施。这样做往往造价高昂且用处不大。本文介绍的是一种能减少由于工业废料带来的环境问题的可取方法。另外,把它作为无机肥的一种补充,应用于沙质土壤的巨桉人工林(3×2m的种植密度)还是一种从经济和技术上都可行的选择。在种植的时候,每株苗下150g的无机肥(NPK10:20:10)。12个月之后,一种利用工业废料制作的补充肥料按15t/hm~2量作为第1个处理;第2个处理施用150g/株的NPK(10:2:10)作为追肥;第3个处理施肥量是第1和第2个处理的和;第1个处理为不追肥对照。 44个月之后对4个处理的生长进行比较,与对照不追肥比较,利用工业废料制作的补充肥料按15t/hm~2量施用的第1个处理的生长量提高了20%;第2种处理提高了12%;而第3种处理则提高了37%。这些结果显示:利用工业废料制作成林业肥料是一种可行的选择。
Due to the increase in pulp and paper production and the increase in the quality of the final product, the industrial waste in our factory is also increasing simultaneously. The main part of these wastes are wood fibers that have been removed from the mill clarifying agent. These wastes are a problem for the environment because they require large areas for storage, as well as ancillary facilities. This is often costly and not very useful. This article describes a desirable method to reduce environmental problems caused by industrial waste. In addition, using it as a supplement to inorganic fertilizers, Eucalyptus grandis plantation (3 × 2 m planting density) applied to sandy soil is still an economically and technically viable option. At planting time, 150g of inorganic fertilizer per plant (NPK10: 20:10). After 12 months, a supplemental fertilizer made from industrial waste was treated at a rate of 15 t / hm -2 as the first treatment; the second treatment was applied at 150 g / plant NPK (10: 2: 10) as the top dressing; the third The amount of fertilizer applied was the sum of the first and second treatments; the first treatment was no top dressing control. After 44 months, the growth of the four treatments was compared. Compared with the control without top dressing, the amount of growth of the first treatment applied with 15 t / hm 2 of supplemental fertilizer made of industrial waste was increased by 20% Processing increased by 12%; while the third treatment increased by 37%. These results show that: the use of industrial waste into a forest fertilizer is a viable option.