“宜施壮”旱田土壤调理剂改良酸性土壤的效果

Effects of Soil Conditioner Yishizhuang for Dry Farmland on Improving Acid Soil

土壤酸化是耕地退化的重要表现,也是制约土壤高产稳产的重要因素,严重影响了我国农业的可持续发展。通过在pH值小于5.5的酸性土壤上连续两季种植蔬菜,研究了"宜施壮"旱田土壤调理剂对酸性土壤pH值、CEC、硅铝率及蔬菜产量和相关生物学性状的影响。试验结果表明,"宜施壮"旱田土壤调理剂可以提升土壤pH值、CEC和硅铝率,提高蔬菜的产量;与对照相比,两季连续施用"宜施壮"旱田土壤调理剂50~200 kg/667 m^2时,可使土壤pH值提升0.06~0.49个单位、CEC提高0.1~0.6 cmol/kg、硅铝率增加0.05~0.16,蔬菜产量增加4.26%~11.71%,同时"宜施壮"旱田土壤调理剂可提高蔬菜整齐度,促进萝卜伸长膨大、白菜增高增粗,使白菜结球更加紧实。研究发现,"宜施壮"旱田土壤调理剂在试验区域的合理用量为100~150 kg/667 m^2。

Soil acidification is the important character of cultivated land degradation and also is the important factor of restricting high and stable yield, which has a strong impact on the sustainable development of China＇s agriculture. This paper studied the effects of soil conditioner Yishizhuang for dry farmland on the pH value, CEC, silica-alaumina ratio, vegetable yield and related biological characters of acid soil by continuously planting tw-o season vegetables on the acid soil of pH value blow,5.5. The results showed that soil conditioner Yishizhuang for dry farmland could improve the soil pH value, CEC, silica -alaumina ratio and vegetable yield. Compared with the control, that applying 50-200 kg soil conditioner per 667 m2 could increase 0.06-0.49 in pH value, 0.1？0.6 cmol/kg in CEC, 0.05-0.16 in silica-alaumina ratio and 4.26%-11.71% in vegetable yield. It also could improve the vegetable uniformity and promote the radish elongating and expanding, Chinese cabbage rising, thickening, and heading tightly. The reasonable dosage of soil acidification Yishizhuang for dry farmland in this experiment w,as 100-150 kg/667 m2.