Эффективность хелатного удобрения Акварин-12 при возделывании картофеля на интенсивном фоне в условиях Среднего Поволжья
2009
Molyanov, V.D. | Rakhimov, R.L.
The study was performed in the samara region. The soil of the test plot was high-cultivated chermozem. Potato vegetating plants were sprayed with chelate fertilizer Aquarin-12 in the concentrations of 0.2; 0.3 and 0.4% or with ammonium nitrate phosphate fertilizer solutions at the same concentrations. Spraying was performed at the budding phase throughout the plot area and in some variants – after 10-12 days at the intensive bulking phase over the half of the plot area. The potato was cultivated simultaneously with irrigation. Over 2 years the yield of early-ripe variety Rozar was 5.4-68.3 t/ha, mid-ripe Zekura – 58.6-72.7 t/ha. The maximum yield increment was obtained by a single spraying with Aquarin-12 in the concentration of 0.4%. Ammonium nitrate phosphate fertilizer spraying also provided the yield increment compared to the control within 3.1-8.7 t/ha. Re-spraying with Aquarin-12 a minor increment of the yield (0.5-1.9 t/ha). The maximum increment of the starch content was obtained by spraying with Aquarin-12: in Rozar in the concentration of 0.3%, and in Zekura – in the concentration of 0.4%. under effect of ammonium nitrate phosphate fertilizer the starch content of tubers of the both varieties increased by 0.7%. Re-treatments had no influence on the starch content
显示更多 [+] 显示较少 [-]