Impact of Different Tillage Methods on Black Soil Temperature and Humidity in Northeast China
Abstract: The impact of no tillage( NT) and mouldboard plow( MP) on black soil temperature and humidity in northeast China were studied from 2005 to 2007. The result showed that tillage methods greatly affected soil moisture content in spring sowing stage. In the corn and soybean farmland,the soil moisture of NT was significantly higher than MP for 6.2% and 6.6% .respectively. In com tasseling stage,there was no significant difference between two tillage methods in different crop farmland. Compared with MP.NT maintained a better soil moisture content level. Soil temperature under NT was significantly lower than MP in spring sowing stage. Effects of different tillage treatments on soil temperature from com seedling to tasseling stage reflected that soil temperature under NT was less than MP in 5,10 and 15 cm soil horizons,and the difference reached the significant level in 5 cm and 15 cm(P<0.05). Crop residue played an important role in keeping soil moisture due to inhibition of water evaporation and decayed crop residue could increase soil organic matter content. NT treatment was beneficial in improving the sustainable production capacity of soil.
No tillageMouldboard plowBlack farmlandSoil temperature and humidity effectCornSoybean
国家科技期刊平台
NSTL
万方数据
维普
