论文部分内容阅读
采取土壤定位检测和回归分析方法进行烟稻复种连作对土壤理化性状的影响效应研究,结果表明,在0~23年烟稻复种连作研究范围内,随复种连作年限的增加,土壤pH值显著升高,且均在7.5以上;土壤物理性状逐步变劣;土壤有机质、氮磷养分、土壤微生物的变化较复杂,基本在复种连作14~18年后呈下降趋势,土壤理化性状的变化趋势总体不利于烤烟生长。
The effect of multiple cropping with continuous cropping system on the physical and chemical properties of soil was studied by using soil location detection and regression analysis. The results showed that within the range of 0 ~ 23 years of continuous cropping with multiple cropping, soil pH value increased significantly High and above 7.5 respectively. The physical characters of soil were gradually deteriorated. The changes of soil organic matter, nitrogen and phosphorus, and soil microorganisms were more complicated, and basically decreased after 14 to 18 years of multi-cropping. The trends of soil physical and chemical traits generally did not change Conducive to the growth of flue-cured tobacco