Designed a random comparative test of field culture, and determined pesticide residue and heavy metal content of soil, irrigation water and rice, associated with organic certificating according to the new national standard GB/T19630-2011 "organic products ". Residue of pesticide 666, DDT and malathion were not detected in the test soil. Pesticide 666, DDT residue were not detected in the irrigation water. Heavy metal residue content in soil and agricultural irrigation water achieves the qualified standard of organic certificating. P...