典型土壤选择草甸土、黑钙土、草甸碱土三种。
Selected soils are meadow soil, Black Calcium soil, and meadow alkali soil, respectively.
通过两年的盆栽试验，研究了有机物料对黑钙土的培肥作用。
The effect of application of organic materials on improving the fertility of Chernozem was studied with two-year pot culture experiments.
通过黑钙土的培养试验，研究了不同作物根茬施入土壤后对土壤腐殖质的影响。
This paper studied the effects of different crop stubbles put in soil on soil humus by cultural experiment of churnozem.
通过土柱试验，研究玉米和大豆根茬还田对黑土、黑钙土各类水解酶活性的影响。
This paper studied the effects of corn and soybean stubble on soil hydrolases.
1994年在碳酸盐黑钙土上进行了有机肥、化肥和有机无机配合施用的盆栽试验。
The experiment of applying organic fertilizer, chemical fertilizer and the both to calcareous blade soil in which organic content was very low was carried out from 1993 to 1994.
利用根盒培养和田间栽培方法，研究了黑土和黑钙土玉米根际有机磷的亏缺和积累的状况。
Rhizo-box and field cultivation methods were used to study the delpletion and accumulation of organic P in maize rhizosphere on blackland and chernozem.
按广义的黑土，包括黑土和黑钙土，应当是四大片，除上述三大片之外，另有乌克兰和俄罗斯。
If including the chernozems, there are four large part area, except the three as mentioned above, and the other is the great plain of Ukraine and Russia.
黑钙土样地选择在大田，草甸土选择在羊草自然保护区内，草甸碱土选择在退化草地碱斑部位。
The Black Calcium soil plots were conducted in farmland, the meadow soil in the Natural Reserves, and the meadow alkali soil in the degraded grassland with saline bowls.
阐述了黑钙土区的环境特点，从经济效益、生态效益、社会效益及生产技术等方面分析了种植甘草的可行性。
Elaborate environment characteristic of chernozem soil area, analysis feasibility of planting licorice with ecological benefit? zoology benefit? society benefit and production technology.
本文对黑钙土、黑土中各种作物根茬留茬与否对土壤腐殖质、土壤重组有机质的组成、结合形态及某些光学性质进行了测定。
There are few studies on the effect of crop root systems on the composition, particularly on the heavy fraction of soil humus.
本文对黑钙土、黑土中各种作物根茬留茬与否对土壤腐殖质、土壤重组有机质的组成、结合形态及某些光学性质进行了测定。
There are few studies on the effect of crop root systems on the composition, particularly on the heavy fraction of soil humus.
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