Abstract: Based on soil tests and field experiments, it is expounded that the supply of Band Zn is insufficient in many soils of Liaoning province, being a major factor limiting crop nutrient balance and yield increase in large areas. Applying Bor/and Zn directly or compounding them with urea beforehand may improve the nutritional and growing status of crops and increase their yield and quality. For upland rice nursery, Zn may be applied with compounding of soil regulator which contains sulphurie acid and other nutrients. In drab soil deficient in Zn, the applied Zn transforms rapidly into its various forms, among which, the carbonate-bound one is the major storage of available Zn. Applying Pfertilizer simultaneously doesn't decrease the availability of Zn. Therefore, the application of Zn in combination with Nand Pwill advantage crop nutrient balance and yield increase.

Key words: Soil B and Zn deficiency, Crop nutrient balance, Micronutrient, Zn transformation