Analysis of dry matter and accumulation of N, P, and K of cigar during field growth period

doi:10.14088/j.cnki.issn0439-8114.2022.16.003

Abstract

Abstract: This study investigated the accumulation of dry matter, nitrogen, phosphorus and potassium in main cigar varieties of Laifeng County through the high-density sampling in the field to provide basic data for subsequent rational fertilization and production quality control. The results showed that the accumulation of dry matter and nutrients followed an “S” curve, and the absorption and accumulation rate of nutrients was slower than that of dry matter. Dry matter and nutrient accumulation were fastest in 30~60 days after transplanting, of which the total accumulation of dry matter, nitrogen, phosphorus and potassium in 50~60 days after transplanting was 40%, 33%, 32% and 37%, respectively. In terms of whole plants, the accumulation of dry matter, nitrogen, phosphorus and potassium in the leaves was the highest, accounting for 50.7%, 70.2%, 58.3% and 57.0% of the whole plant, respectively, followed by the stems and accounting for 32.2%, 20.1%, 29.2% and 32.0%, and the roots were the lowest, which were 17.1%, 9.7%, 12.5% and 11.0% of the whole plant, respectively.

Key words: cigar, dry matter, nitrogen, phosphorus, potassium, accumulation

CLC Number:

S668

XU Xiang-yu, FAN Jun, WANG Rui, CHEN Hong-hua, BU Gui-jun. Analysis of dry matter and accumulation of N, P, and K of cigar during field growth period[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(16): 18-23.

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