By studying impermeability and anti\|shear performance of the sludge from wastewater treatment plant with different water content (sludge a with 80 percent and sludge b with 45 percent), this article excludes the possibility of using sludge b as landfill final cover material but presents a proposition of utilizing sludge a.

Effect of different covering materials on turf establishment;

Thermal measurement system for measuring heat transfer coefficient of greenhouse covering materials based on virtual instrumentation;

Effects of different covering materials on tilth soil temperature and maize emergence

Theoretical analysis using the method of energy equilibrium in covering layer and validation of the overall heat transfer coefficient of greenhouse covering materials;

Research and development of the test apparatus for measuring the overall heat transfer coefficient of greenhouse covering materials;

Review of the hot-box methods for measuring the thermal transmittance of greenhouse covering materials;

Based on nature evaporation experimentation with artificial controlled precipitation, the evaporation and availability of soil water to plant under 50% cover rate conditions with four types of mulch materials, including plastic film, water permeable plastic film, hay and sponge plastic sheet, were studied.

Effect of surface mulching materials on infiltration of muddy water on loamy soils;

Based on natural evaporation experimentation with artificially controlled precipitation,the evaporation and soil moisture under 50% coverage rate with four types of mulching materials were studied.

In this pot experiment, the effects of half decomposed wheat straw and municipal garbage, plastic film, sorghum straw mat, and cardboard as mulching materials on corn seedling growth and soil nutrientsdistributions were studied.