| The characters of Liaoning province the main maize production region are that soil layer shoal and plow pan is hard. According to the characters, 5 tillage managements were designed to study effects of different tillage managementson soil moisture and development of maize. CK is the rotary tillage, the others are 35 cm sub soiling depth and notillage, 35 cm sub soiling depth and rotary tillage, 25 cm sub soiling depth and no- tillage, 25 cm sub soiling depth androtary tillage. The results showed that soil water contents of different tillage manage-ments were all higher than CK. Among
of which the 35 cm sub soiling depth and no-tillage and 35 cm sub soiling depth and rotary tillage in the fall were moresignificant. All the tillage managements increased the leaf area, the root/shoot ratio,Otherwise, after the subsoiling treatment, maize yield components than CK. Among them, the combination of 35 cm sub soiling depth and rotary tillage is
the most optimal. |
