“万物土中生”,土壤是农业生产的基础。为了实行科学种田,提高土壤肥力,增产增收,就要了解土壤,摸清土壤的脾气,进行科学管理,为作物生长创造一个良好的环境条件。 一、土壤的成分与作物 生长的关系 土壤的各式各样有脾气都要直接或间接地受土壤组成的影响。土壤不是一种单一的物质,它是由无机体(矿物质)、有机体(有机质和活的生物)、液体(水分)和气体 “All things are born in the soil,” soil is the basis of agricultural production. In order to implement scientific farming, improve soil fertility and increase yield, we must understand the soil, find out the temper of the soil, scientific management, to create a good environmental conditions for crop growth. First, the relationship between the composition of the soil and crop growth Soil has a temper all kinds of directly or indirectly affected by soil composition. Soil is not a single substance, it is composed of inorganic bodies (minerals), organisms (organic matter and living organisms), liquids (moisture) and gases