Dairy manure and tillage effects on soil fertility and corn yields.
作者： Anwar U.H. Khan , M. Iqbal , K.R. Islam
DOI: 10.1016/J.BIORTECH.2006.07.041
关键词: Agronomy 、 Soil fertility 、 Bulk density 、 Tillage 、 Hydraulic conductivity 、 Soil water 、 Conventional tillage 、 No-till farming 、 Manure 、 Mathematics
摘要: Organic amendments have received renewed attention to improve soil fertility for crop production. A randomized complete block split plot experiment was conducted evaluate the dairy manure (DM) of corn (Zea mays L. cv. Monsanto 919) production under different tillage systems. Main treatments were no-till (NT), conventional (CT), and deep (DT), subplot chemical fertilization (DM(0)), DM at 10Mgha(-1)yr(-1) (DM(10)) 20Mgha(-1)yr(-1) (DM(20)) with supplemental fertilization. Results show that had significantly reduced bulk density (rho(b)) greater porosity (f(t)) hydraulic conductivity (K(fs)) than soils NT DM(0). Manuring effective physical properties in all treatments. While increased C sequestration, N concentration influenced by both significant interaction. The CT P as did addition manure. However, manure, K tilled produced taller plants higher grain yields, water-use efficiency soils, manuring, contrast, harvest index. Manure exerted quadratic effect on biomass uptake. variable effects manuring growth are most probably related "transitional period" which ecosystems may adjusting a new equilibrium.
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