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Scientia Silvae Sinicae ›› 1999, Vol. 35 ›› Issue (1): 94-103.

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STUDY AND PROSPECTS OF THEORY AND TECHNIQUES FOR STEADY-STATE MINERAL NUTRITION OF PLANTS

Huaiming Zheng1,Hujun Jia2   

  1. 1. The Chinese Society of Forestry Beijing 100091
    2. The Research Institute of Forestry, CAF Beijing 100091
  • Received:1997-09-30 Online:1999-01-25 Published:1999-01-25

Abstract:

The theory and techniques for steady-state mineral nutrition of plants, which is relative to the traditional mineral nutrition, is one kind of view in full new and experimental technique little short of being perfect.The main points of the steady-state mineral nutrition can be summarized as follows:(1) According to the requirements of the plants to supply the nutrients; (2) Suppling the nutrients in alow concentration which is close to the concentration of the natural soil solution; (3) Suppling the nutrients in a balanced proportion according to the requirements of plants.Based on the experimental technique proposed by T.Ingestad, the optimum growth of plants tested have been obtained so that the growth potential of plants has been tapped fully.For many years, the research fields of the steady-state mineral nutrition include the extension of range from tree species, ions, and experimental conditions, application of the theory to forest tree nursery cultivation, fertilization modles of forestland, and the related cross-study, as well as the study on the mechanism of the steady-state mineral mutrition from the matter metabolism and environmental conditions.The results have proved that the real relationship between growth and nutrition of plants has been revealed by the theory and techniques for steady-state mineral nutrition.

Key words: Steady-state mineral nutrition of plants, Relative addition rate of nutrients, Optimum growth, Optimum nutrient weight proportion, Nutrient flux density