Abstract: A field micro-plot experiment with peanut was conducted to study the soil water content, plant elongation rate, leaf area index, photosynthetic rate, water use efficiency, and economic yield under hydromulching. By using subordinate function, the soil water availability was analyzed. Hydromulching increased the soil water content by 103%-167%, and improved the soil water availability. The peanut water consumption differed significantly with soil layer, being the greatest for 20-40 cm soil layer. Under hydromulching, the photosynthetic rate increased by 1.9%-15.6%, leaf area index raised by 0.3%-26.4%, and plant morphology was improved. In considering all indices, high concentration of hydromulching type 3 had the most obvious effect.

Key words: vegetable residue, vegetable yield., compost, solar greenhouse, root environment