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肥料是提高蔬菜产量、影响蔬菜品质和维持、培肥菜园土的主要物质基础。近年来,我们在六十年代和七十年代对西安郊区菜园土进行初步研究的基础上,继续进行了研究,现将初步结果分述于下. 一、西安郊区的菜园土西安郊区的菜园土是在有5,000年耕作栽培历史的土壤上,经过近百年来更为精细的耕作管理和大量施肥、频繁灌水发育而成的熟化程度较高的土壤。主要有下列五种: 1.黑油土发育成的菜园土。黑油土属平地土壤,成土母质多为黄土,地下水位较深(6—20米).耕作历史很长,人为因素影响很大(剖面中瓦砾特多),复盖层很厚,熟化度较高.
Fertilizer is to improve the yield of vegetables, affecting the quality of vegetables and maintain, fertilize the garden material of the main material base. In recent years, we conducted a preliminary study on the garden soil in the suburbs of Xi’an in the 1960s and 1970s, and we present the preliminary results in the following: 1. The garden soil in the suburbs of Xi’an in the suburbs of Xi’an Is cultivated in 5,000 years of cultivation history of the soil, after nearly a hundred years of finer tillage management and a large number of fertilizers, irrigation frequently developed mature soil with high degree of maturity. There are mainly the following five kinds: 1 black soil developed garden soil. Black oil soil is a flat soil, mostly soil parent material is loess, groundwater depth (6-20 meters.) Tillage has a long history, human factors have a great influence (cross-section of the rubble much), the cover is thick, mature Higher degree.