Studies on the effects of bio-organic fertilizer on the physical and chemical characteristics of soil and the yield of cassava＊
Studies on the effects of bio-organic fertilizer on the physical and chemical characteristics of soil and the yield of cassava＊作者机构：Agricultural College Guangxi University Nanning 530005 China
出 版 物：《Journal of Life Sciences》 (生命科学（英文版）)
年 卷 期：2008年第2卷第1期
页 面：27-36页
学科分类：090101[农学-作物栽培学与耕作学] 09[农学] 0903[农学-农业资源与环境] 0901[农学-作物学] 090301[农学-土壤学]
主 题：bio-organic fenilizer -cassava yield physical andchemical characteristics of soil
摘 要：Bio-organic fertilizer is a new type of fertilizer which have advantages of both organic manure and fertilizer. This study investigated the effects of bio-organic fertilizer on the growth and yield of cassava and the soil fertility. The study was carried out in the period of 2004-2005 and the material was cassava cultivar FUXUAN01. The bio-organic fertilizers were applied as basic fertilizers on four different levels of 450 kg/hm^2, 600 kg/hm^2, 750 kg/hm^2, 900 kg/hm^2 in this experiment. The growth of stem and leaf, the yield of earthnut and the starch content of tuber root of cassava and the unit weight, the hole percent, the content of organic matters, nitrogen, phosphorus and potassium, microbes, the activity of soil urease and invertase were analyzed during the experiment. The results showed that not only can the bio-organic fertilizer promote the growth of cassava stems and leaves, increase the chlorophyll content and the photosynthesis of leaves, improve the physiological metabolism of cassava, and strengthen physiological function of anti-senility, promote the transformation from photosynthetic organism to tuber root and increase the yield and starch content in the tuber root of cassava, but also decrease the soil unit weight, increase the hole percent of soil, promote microbe activity in the soil, increase the activity of soil urease and invertase, promote the availability of nutrients, increase the content of organic matters, available nitrogen, phosphorus and potassium, and increase the utilization rate of fertilizer. It was an effective way to apply the bio-organic fertilizer to increase the yield and starch content in the tuber root of cassava, improving the physical and chemical characters of soil and increasing the soil fertility.
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