有机物料对滨海盐渍土的改良作用及对金银木生长的影响

Improvement of coastal saline soil by organic material and its effect on the growth of Lonicera maackii

为了探讨有机物料改良滨海盐渍土的效果,选用牛粪、醋糟、食用菌菌渣和绿化粉碎废料,设定14种配比对盐渍土进行处理,定植金银木(Lonicera maackii)做生长试验,并定期测定土壤全盐含量和pH。结果表明,有机物料对土壤全盐含量和pH的改善作用不同,其中以用量较多的醋糟、食用菌菌渣和绿化粉碎废料与较少量的有机肥配合施用,即牛粪∶醋糟∶食用菌菌渣∶绿化粉碎废料为1∶3∶3∶3(体积比),对土壤改良效果较好,且在此条件下种植的金银木能获得最大生长量。在评价土壤改良效果方面,生长量指标(株高、冠幅)比生理指标(叶绿素指数和净光合速率)更具有代表性。

To explore the effects of organic materials on the improvement of coastal saline soil,cow dung,vinegar grains,edible fungi residue and plant crushing waste were selected as materials.14 kinds of proportions were set for saline soil treatment,and Lonicera maackii were planted for growth test,and the total salt content and pH of soil were determined regularly.The results showed that organic materials had different effects on the improvement of soil salt content and pH,in which,the vinegar residue,mushroom residue and green crushing waste mixed with a small amount of organic fertilizer,i.e.cow manure∶vinegar residue∶mushroom residue∶green crushing waste was 1∶3∶3∶3(volume rato),which had better effect on soil improvement,and the maximum growth of Lonicera maackii could be obtained under this condition.In evaluating the effect of soil improvement,the growth index(plant height,crown width)is more representative than the physiological index(chlorophyll index and net photosynthetic rate).