钙、硅对酸雨胁迫下玉米生长的影响

采用盆栽实验方法，研究了在模拟酸雨胁迫下施用碳酸钙和硅酸钠对玉米(metre)生长及养分吸收的影响．结果表明，短期内浇施pH30的酸雨对玉米生长无显著不良影响，反而因酸雨中含有N、K、P等营养元素，可起到一定的促进作用。施用碳酸钙和硅酸钠有利于防止酸雨诱发的土壤酸化，促进玉米对N、K等元素的吸收，显著促进玉米生长．

The effects of calcium and silicon on the growth of corn under acid rain force

The experiments of basin-planting are made to study the effects of calcium carbonate and sodium silicate on the growth of com and the absorption of nutrious elements under simulated acid rain force. The results indicate that the deposition of simulated pH 3.0 acid rain onto the foliage of corn decreases soil pH to some degree, which have no negative but positive effect on corn growth, for it contains N, S, and K elements. In this way, it can prevent the soil acidification caused by acid rain, raise soil pH, help the absorption of the elements as N, K, and obviously promote the growth of com.