Effect of Different Application Amount of Slow-release Potassium Fertilizer on the Growth and Development of Tomato Plug Seedlings
GUO Tianli
ZHANG Huimei
LI Shengli
TIAN Liying
Abstract：In order to study the effect of different application amount of slow-release potassium fertilizer surueyed on the growth of tomato hole tray seedlings.In this experiment,we studied the influence of the physical and chemical properties of the matrix applying HA-K for the emergence rate and growth of tomato seedlings with 72 hole plug-seedling.The results showed that on the basis of adding a fixed amount of urea formaldehyde (2.8 g/L),calcium-magnesia phosphate fertilizer (4.0 g/L) and calcium superphosphate fertilizer(2.0 g/L),emergence rate of the tomato seedlings,plant height,stem thickness and healthy index of T3 treatment(when the content of potassium humate was 4.8 g/L) were obviously higher than the control group;T1 treatment(when the content of potassium humate was 0 g/L),which chlorophyll content was obviously higher than the control group.With the increase of the number of days after planting the matrix of the electrical conductivity value showed a trend of gradual decline of T3 treatment,then decreased to 0.17 mS/cm after 40 days sowing.The pH of the treatments were all above 7.0 after 40 days sowing.Comprehensive analysis of the above results indicated that,T3 treatment was the most suitable treatment for cultivating strong tomato seedlings,the reason of high pH about matrix still needed further research.
Keywords：tomatoslow-release potassium fertilizerplug-seedlinggrowth indexphysical and chemical properties
Publication Date：2017-10-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 99-103 )