可降解液态膜在葡萄越冬应用中的安全性调查OA

In the cold area of grapevine buried soil,the Biodegradable liquid film(BLF)was applied to the vineyard soil and vine branches instead of the traditional buried soil for cold protection.By detecting the residue of pollutants in grape fruits,branches and soil,the pollutant residuces of BLF on grapevine plants and soil were investigated.The results showed that BLF was sprayed on soil and plants in winter,which could be basically degraded naturally within 180 days;The test of heavy metal content showed that the content of arsenic,chromium,cadmium,lead and nickel in soil using BLF for five consecutive years in winter and for a short period in spring were lower than the national standard,and the use of BLF significantly reduced the content of chromium,lead,and nickel in soil in the short term;cadmium and lead were not detected in grape fruits using BLF for five consecutive years in winter,and there was no significant difference in the content of cadmium and lead in grape branches using BLF inspring compared to the control;the use of BLF was also without the risk of benzene[α]pyrene pollution.The above results indicate that the field use of BLF does not have the risk of contamination by arsenic,chromium,cadmium,lead,nickel and benzo[α]pyrene.