不同调酸型土壤调理剂在萝卜-芹菜轮作上的改良效果

The Improvement Effect of Different Acid-Regulating Soil Conditioners on Radish-Celery Rotation

在酸性土壤上,研究了不同调酸型土壤调理剂对萝卜-芹菜轮作农艺性状和化学性质的影响。设4个处理:CK、石灰+风化煤(I)、氢氧化钾+风化煤(II)、硅钙钾镁(III)。结果表明:在萝卜产量提升上,石灰+风化煤和硅钙钾镁分别使萝卜增产10.3%和12.6%,而氢氧化钾+风化煤萝卜增产效果不明显。从芹菜的叶绿素、株高、茎粗及产量来看,石灰+风化煤在芹菜的生长上表现最优,其次是硅钙钾镁,再次是氢氧化钾+风化煤,对照基本绝产。萝卜-芹菜轮作后,在改良土壤的pH值和交换性酸上,与对照比,石灰+风化煤、硅钙钾镁可使土壤pH值提高0.42、0.11个单位,而氢氧化钾+风化煤施用后土壤出现了一定的复酸化现象;在土壤养分上,与对照比,施用土壤调理剂的各处理均提高了酸性土壤的硝态氮、有效磷、速效钾和有机质含量。

Experiments of different acid-regulating soil conditioners on the effects of agronomic traits and chemical properties on radish-celery rotation were studied in acid soil.4 treatments were set:CK;treatment with lime and weathered coal(I);treatment with potassium hydroxide and weathered coal(II);treatment with Silicon-Calcium-Potassium-Magnesium(III).The results showed that treatment I and III increased the yield of radish by 10.3%and 12.6%respectively,while there was no obvious effect in treatment II.The performance of celery growth were I>III>II by testing chlorophyll,plant height,stem diameter and yield.The CK treatment basically had no yield.After the radish-celery rotation,compared with CK,pH value of soil increased by 0.42,0.11 units in reatment I and III,while treatment II showed some reacidification phenomenon.Compared with CK,the contents of nitrate nitrogen,available phosphorus,available potassium and organic matter of the acid soil were increased by all treatments.