Ridge Loosening Machine Improved Water Infiltration and Crop Yield under Permanent Raised Beds
Permanent raised beds (PRB) with ridge tillage and furrow irrigation has obvious advantages in water saving, waterlogging controlling and low operation cost etc, and currently many irrigated corps are planted under PRB in northern China, however, while the ridge is wide (centre to centre spacing of furrows ≥ 75cm), the water in furrow cant infiltrate to the centre of bilateral ridges effectively, and it can cause low seedling emergence and result in yield decreasing. A ridge loosening machine was designed to solve the problem of wide ridges weak water infiltration under PRB, and in Hexi corridors irrigation farming areas, the data of water content, soil continuous water infiltration effect, ground temperature, seedling emergence, plant characters and yield etc were tested in the ridge, which was loosened by machine, to evaluate the machines performances and its ability of improving soil water infiltration and crop yield. The experimental results show, in the depth of 0-100cm under the earths surface, the ridge loosening machine can accelerate water infiltration from the earth furrow to the centre of wide ridges, intensify soils permeability, increase 20％ of soil water content in the centre of ridge and 0.1℃-0.2℃ of ground temperature, moreover, it can also enhance 17％ rate of emergence and heighten 6％-8％ yield. We recommend that, in the irrigation areas adopted PRB farming system, ridge-loosing machine should be extended to solve wide ridges weak water infiltration due to its great effectiveness in accelerating water infiltration and enhancing crop yield.
Conservation tillage Controlled traffic ridge loosing machine furrow irrigation
He Jin Li Hongwen Ma Shaochun Wang Xiaoyan Allen McHugh
Department of Agricultural Engineering, China Agricultural University. Beijing, 100083, China School of Agronomy and Horticulture, The University of Queensland. Gatton, Qld 4343, Australia
国际会议
2006年中—加保护性耕作论坛(China-Canada Conservation Agriculture Forum)
北京
英文
289-298
2006-09-21（万方平台首次上网日期，不代表论文的发表时间）