关键词: 农林废弃物, 葡萄枝条, 保温性, 保水性, 保肥性, 基质

Abstract: In order to solve the problems of environmental pollution and resource recycling of agricultural and forestry residues like vineyard pruning, this paper studied the physic-chemical characters, water and heat preservation property, fertilizer retaining ability of compound substrate and their effects on tomato growth and development, taking vineyard pruning, corn straw, cow-dung biogas residue, and river sand as raw materials; and analyzed the principle components of all indexes. The results showed that compound substrate C1 at the ratio of vineyard pruning:corn straw:cow-dung biogas residue:river sand=3∶3∶2∶2 had better performance on water, heat and fertilizer retaining. It could also significantly promote the growth and development of tomato. The principal components analysis indicated that C1 was the best formula for promoting tomato growth and maintaining substrate quality. This study had provided references for utilizing agricultural and forestry wastes to exploit new-type substrates for vegetable cultivation.

Key words: agricultural and forestry wastes, grape branches, heat preservation property, water-retaining property, fertilizer preserving ability, substrates