Singh G, Dowman A, Higginson F R, Fenton I G
Biological and Chemical Research Institute, Rydalmere, NSW, Australia.
J Environ Sci Health B. 1992 Dec;27(6):711-28. doi: 10.1080/03601239209372808.
Field trials were conducted to measure translocation of pesticides by summer and winter forage/pasture species from soil containing aged residues of heptachlor and, to a lesser extent, dieldrin. Substantial amounts of heptachlor epoxide, and lesser amounts of gamma-chlordane were translocated to plants from contaminated soil. Residue levels varied with crop species and stage of plant development. In summer crops residues were higher in soybean > cowpeas > lab-lab > Sorghum > millet > sweet saccaline at the grazing and mature stages. Compared to glasshouse studies undertaken previously, residues in crops grown under field conditions were much lower. This apparently reflects the lower soil moisture levels and the reduced rates of translocation. Heptachlor residues in winter crops were highest in Saia oats > Berseem clover > Haifa clover > Cassia oats > Tetila ryegrass > Schooner barley > Shaftal clover > Hunter river lucerne at the grazing stage. There were no detectable levels in barley and oats at the mature stage. No dieldrin residues were translocated into the various crop species.
开展了田间试验，以测定夏季和冬季饲料/牧草品种从含有七氯老化残留（以及少量狄氏剂）的土壤中对农药的转运情况。大量的环氧七氯以及少量的γ-氯丹从受污染土壤转运到了植物中。残留水平因作物品种和植物发育阶段而异。在夏季作物中，处于放牧期和成熟期时，大豆中的残留量高于豇豆＞扁豆＞高粱＞小米＞甜高粱。与之前进行的温室研究相比，田间条件下种植的作物中的残留量要低得多。这显然反映了较低的土壤湿度水平和降低的转运速率。在冬季作物中，处于放牧期时，赛燕麦中的七氯残留量最高＞埃及三叶草＞海法三叶草＞决明燕麦＞特蒂拉黑麦草＞纵帆船大麦＞沙夫塔尔三叶草＞猎人河苜蓿。在成熟期，大麦和燕麦中未检测到残留量。没有狄氏剂残留转运到各种作物品种中。
