1. Elaborate environment characteristic of chernozem soil area, analysis feasibility of planting licorice with ecological benefit? zoology benefit? society benefit and production technology.

2. This thesis studied ecological effect of high ridge chernozem by control test of corn continuous cropping.

3. The relationship between the effective application of Zn fertilizer and the yield of maize grown in was studied through pot and field experiments in phaiozem and chernozem in Songnen Plain.

4. The effect of application of organic materials on improving the fertility of Chernozem was studied with two-year pot culture experiments.

5. This paper concerns water situation, soil constitution, PH value, organic matter content and humic composition of chernozem under different artificial forest.

6. The structure of leaves was a transition type between that typical of chernozem soil and that of saline-alkali soil.

7. The amounts of total organic carbon, biomass C, heavy fraction C, extractable humus (HE) and loosely-combined humus and the humification degree were higher in steppe chernozem than in wind-blown soil.

7. is a online sentence dictionary, on which you can find excellent sentences for a large number of words.

8. It takes 4-5 years for the pasture to restore the dominance of Aneurolopidium chinensis in drilling sites of chernozem and aeolian sand soils.

9. The results showed that the contents of organic matters in soil and heavy fraction were markedly increased and the agrochemical properties of Chernozem were improved by applying organic materials.

10. Rhizo-box and field cultivation methods were used to study the delpletion and accumulation of organic P in maize rhizosphere on blackland and chernozem.