Suitable Nutrition Basis of Nitrogen and Phosphorus and Rational Application of Fertilizer for High and Stable Yield in Winter Wheat

doi:10.3321/j.issn:1000-7091.1993.03.014

Abstract

Abstract: Field trials were conducted to study the relationship between absorption oi N, P₂O₅ and accumulation of photosynthate in the main growing stages and grain yield by using two varieties of winter wheat during 1986-1990.The results showed that the accumule-tion of photosynthatc increased with absorption of N, P₂O₅ in the early growing siage.The excessive absorption of N would induce unfavourable effect on the post-anthcsis biomass accumulation and final yield.The suitable criteria of N and P₂O₅ absorption in main growing stages were determined.And also it was revealed that N and P₂O₅ absorption and accumulation were mainly related to the amount of N and P₂O₅ applied.Based on the result, monitoring techniques for fertilizer used to maintain suitable N and P₂O₅ levels in wheat were established.

Key words: Winter wheat, Yield, Nilrogcn, Phosphorus, Technique of fertilizer application

Zhang Wenying, Zhang Qingjiang. Suitable Nutrition Basis of Nitrogen and Phosphorus and Rational Application of Fertilizer for High and Stable Yield in Winter Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1993, 8(3): 76-81. doi: 10.3321/j.issn:1000-7091.1993.03.014.

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