Abstract:

The nutrition characteristics and the fertilizer effect of ‘Tian-you 998’ were studied in this paper. The results showed that the yield was highest when 157.5 kg/hm2 N and 75 kg/hm2 K2O were applied. The demand of potassium was more than phosphate and nitrogen and the N, P2O5 and K2O were took away in ratio of 1:0.55:2.68. The influence of nitrogen on yield and agronomic characters of ‘Tian-you 998’ was clearly than that of potassium, It was the key nutrient factor for yield and agronomic characters. The absorption of nitrogen, phosphorus and potassium concentrated in the tillering stage to heading stage, absorption of zinc mainly in the latter stage of growth period while the other trace elements concentrated in the medium term. This results provided a theoretic basis for scientific fertilizer management of ‘Tian-you 998’.