Abstract:This is a new attempted systematical classification, which is based upon the point of view of erosional dynamics&characteristics (both morphology and inner structure),& also the effects on the land productivity. Although the basic phenomena of soil erosion in this region are similar to those, which are found in other regions; yet their variants, degree of intensity and direction of development are more or less different and even quite different occasionally with others.

Abstract:Почвы громадной равнины северного Китая образовалисъ из отложения наносыреки Хтанхэ.

Abstract:Кривая всаывания воды и набухание коллонды двтх глинистых минералов,трех почв,пятх коллоидов（<1μ）из почв опредеится аппаратом дпя снятия кривой всасывания.

Abstract:Из данных лабораторных и вегетационных опытов с красноземами могут вытекатъ следующий выводы.

Abstract:Для выяснениявопроса о влиянии соли на рост и составтрав,вегетационные опыты проодилисъ с восемью растениями.

Abstract:The results obtained by the pot experiment, inoculating wheat with those bacteria which were reported in the previous paper as well as those results which were obtained by the field experiments on wheat are reported.

Abstract:В Китае проведенно болъшое число опытов снитрагин,препрараты искуственно разведенных кулътур клубеньковых бактерий,пол арахисом за 1950-1955 гг.

Abstract:В начале 1955 г.