Abstract:

Field experiments were conducted to evaluate the effects of different tillage on soil physical properties, weeds, yield of winter wheat and its components. Before jointing stage, NT, NTS3000 and NTS6000 could significantly increase the topsoil water content, NTS3000 and NTS6000 could significantly decrease soil temperature. After jointing stage, the difference of soil water content and temperature between different treatments decreased. Compared with RT, NT, NTS3000 and NTS6000 could significantly increase 0~5 cm soil bulk density, weed density, height and fresh weight of Capsella bursa-pastoris (L.) Medic., and decrease 15~20 cm soil bulk density, weed density, height and fresh weight of Lithospermum ravense L. and Descurainia Sophia (L.) webb, RTS could also decrease the density of Lithospermum arvense L. and Descurainia sophia (L.) webb, but increased their average height and fresh weight. The grain yield of NTS3000 and NT was 13.0% and 8.3% higher than that of RT, whereas, RTS and NTS6000 was 9.1% and 17.4% lower than that of RT. In view of the beneficial effects of farmland environment on wheat production in NTS3000 plot, NTS3000 was the more suitable conservation tillage for North China Plain.