海南用于种植木薯的土壤一般都比较酸瘦.通过在海南木薯种植地施用由农业废弃物资源和腐殖酸等研制而成的环保型土壤改良剂(酸性土壤改良剂和营养型酸性土壤改良剂),研究环保型土壤改良剂在种植木薯的土壤中的改良效果.结果表明:2种改良剂均可提高土壤pH,有效改善土壤酸度,增加土壤有机质,提高木薯鲜薯产量;施用营养型酸性土壤改良剂的木薯各种农艺性状均优于不施用的,鲜薯产量约是不施用的二倍,比施用酸性土壤改良剂增产71.2％;木薯种植生产中可根据土壤状况和增产目标选用不同类型的土壤改良剂.%The Soil was generally acidity and nutrient depletion in the cassava field of Hainan. Taking environmental friendly soil amendments (acid soil amendment and nutritive acid soil amendment) which was developed by agricultural refuse and humic acid as material, the effect of environmental friendly soil amendments on the cassava production was studied. The results showed that both of soil amendments could improved p H value of the soil, improved soil acidity, improved content of soil organic matter and increased cassava yield; The cassava agronnomic characters of the nutritive acid soil amendment were better than that of no-application, the cassava yield was about twice than that of no-application, the yield was 71.2％ higher than that of acid soil amendment. Therefore, different types of soil amendment could be selected according to the soil condition and cassava yield target.
展开▼
