Abstract: 【Objective】 To research the weeds control effect of different kinds and dosage of herbicides in spring maize whole-stalk and zero-tillage field.【Methods】 Four types of herbicides,i.e. 50% acetochlamine,48% ethyl atrazine,41% isopropyl atrazine,and 42% Butachlor·Metolachlor·Atrazine,were tested by random group in the field to research the control effect and yields of 4 herbicides on weeds in spring maize field.【Results】 The best treatment effect was 42% Butachlor·Metolachlor·Atrazine at 1 500 mL/hm²,the control effect for monocotyledon weeds was 72.0%,dicotyledon weeds was 85.4% after 42 d,the inhibition rate of fresh weight of monocotyledon weeds was 70.0%,the inhibition rate of fresh weight of dicotyledon weeds was 80.6%,and the yield was 11 390 kg/hm².【Conclusion】 It is recommended to use 42% Butachlor·Metolachlor·Atrazine at a dose of 1 500 mL/hm² in spring maize zero-tillage field covered by whole stalk in Changzhi area of Shanxi Province.

Key words: Herbicide, Spring maize field, Control efficiency, Yield