对三氯乙酸研究结果表明,TCA是生长紊乱剂,受害轻者使作物致畸,重者使作物致死;可随土壤水分上下移动,但不沉积于下层,在40cm土层以下由于土壤微生物的消解作用而消失。TCA在植株体内的残留以3叶期较多,但在籽粒中的残留甚微。TCA在磷肥中的剂量为200mg/kg时,对作物的危害不明显,是安全剂量;在400mg/kg时,出苗率达90%以上,减产4.4%,差异不显著,为临界剂量;800mg/kg时平均减产19.1%,是禁止使用剂量。 The results of trichloroacetic acid show that TCA is a growth disorder, the victim of light crop teratogenic, crop fatal to death; can move up and down with the soil moisture, but not deposited in the lower 40cm soil layer due to soil microbial Digestion and disappear. TCA residues in the plant body to 3 leaf stage, but little residue in the grain. TCA in the phosphate fertilizer at 200mg / kg, the harm to the crop is not obvious, is a safe dose; at 400mg / kg, the emergence rate of 90% or more, a reduction of 4.4%, no significant difference for the critical dose; 800mg / kg when the average reduction of 19.1%, is the prohibition of the use of dose.