土壤调理剂对增强设施蔬菜咸水灌溉安全性的效果

Enhancing Security Effect of Soil Conditioning Agents on Facility Vegetable Cultivating Irrigated with Salty Water

通过设施蔬菜轮作咸水灌溉的土壤调理剂试验,用灰度关联分析方法和单一因素比较方法评价了土壤调理剂对设施蔬菜咸水灌溉的土壤、作物等指标影响。结果表明:咸水灌溉设施蔬菜轮作制度中,黄瓜-芹菜轮作和咸水灌溉制度为咸淡灌溉次数比1∶4的情况下,施用土壤调理剂Ⅰ、Ⅲ能降低土壤盐的积累;西红柿-芹菜轮作和咸水灌溉制度为咸淡灌溉次数比1∶2的情况下,施用土壤调理剂Ⅲ能降低土壤盐的积累。施用土壤调理剂Ⅰ、Ⅲ能够提高咸水灌溉设施蔬菜的产值。施用土壤调理剂Ⅰ、Ⅱ能够提高蔬菜的维生素C含量、可溶性糖含量,同时也有利于提高蔬菜叶绿素相对含量。灰度关联分析也表明,在黄瓜-芹菜咸水灌溉下土壤调理剂Ⅰ、Ⅲ的加权关联度为0.69、0.63,算数关联度为0.73、0.63;在西红柿-芹菜咸水灌溉下土壤调理剂Ⅰ、Ⅲ的加权关联度为0.55、0.60,算数关联度为0.59、0.59。综合来看施用土壤调理剂能够提高咸水灌溉设施蔬菜产量、改善品质,降低土壤中盐的积累。

Field experiments have been conducted on soil conditioning agents, effect of the facility vegetable rotations irrigated with salty water on facility vegetable was studied in Tianjin Binhai New Area. Grey relational analysis and the single factor correlation analysis were adopted to analyze soil;crop and other indicators data of facility vegetable irrigated with salty water and applied soil conditioners. The results showed that regarding vegetable cropping systems irrigated salty water,for the cucumber-celery rotation with fresh water and salty water irrigation frequency ratio of 1 ： 4, the application of soil conditioner and soil conditioner Ⅲ could reduce accumulation of soil salts;for tomatoes-celery rotation with fresh water and salty water irrigation frequency ratio of 1 ： 2,the application of soil conditioner Ill could reduce the accumulation of soil salts. Application of soil conditioner I and soil conditioner Ⅲ was able to improve the output value of vegetables irrigated saltwater. Application of soil conditioner I and soil conditioner Ⅱ were able to improve vegetables vitamin C content, vegetables soluble sugar content, and also help to improve the relative chlorophyll content of vegetables. The results of grey correlation analysis also showed that the cucumber-celery rotation irrigated with salty water under soil conditionerI,and soil conditioner Ⅲ ,the weighted correlations were 0. 69 and 0. 63,arithmetic correlations were 0. 73 and 0. 63 , the tomatoes-celery rotation irrigated with salty water under soil conditioner and soil conditioner In, the weighted correlations were 0. 55 and 0. 60,arithmetic correlations were 0. 59 and 0. 59. On the whole, soil conditioners were able to improve production of facility vegetables, improve quality of facility vegetables, and also reduced the accumulation of salts in the soil.