ЭлБиб

10.04.2018

Влияние агротехнических приемов на азотное питание фенхеля обыкновенного

4/20

Absorption of nitrate nitrogen changed during the vegetative period of fennel. The maximum of

nitrogen absorption was observed in the period of 5-6 leaves – flowering (81.4% of the total

amount of nitrate nitrogen absorbed by the plants). In this period was obtained significant

decrease of content of the nitrate nitrogen in the soil. Nitrogen fertilizers positively influenced on

the content of nitrogen nutrients in the soil.

Nitrogen removal by fennel changed according to variants of experiment from 21.5 to 52.3 kg/ha,

the seeds’ yielding capacity – from 0.74 to 1.39 tons/ha. The maximum of these indicators was

observed in variant of nitrogen fertilizers of 90 kg reactant/ha, when fennel was sown on third

decade of March with row spacing of 45 cm, the minimum – without fertilizers control, sown in a

later date with usual rows. Nitrogen removal by fennel increased with increase the seeds’ yielding

capacity of the crop.

Электронная Научная СельскоХозяйственная Библиотека