Studies On The Nutrient Solution And Plant MorpHology Control By Chemistry Of Hydroponic Hydrangea MacropHylla

This test conducted a preliminary experimental study on Hydroponic Technology of Hydrangea macropHylla from four aspects that the nutrient solution formula, nutritional liquid PH value, plant morpHology control and anatomy of root.Aimed at for the future of hydroponic Hydrangea macropHylla industrial development to provide a scientific application of reference.Test results are as follows:①nutrition screening test showed that different nutrient solution treatment on the Hydrangea macropHylla plant growth and flowering traits of different, comprehensive consideration of nutrient solutions for testing on growth and flowering Hydrangea macropHylla indicators of the impact of traits that TreatmentⅢ(Japanese garden test formula) is more suitable for the growth of Hydrangea macropHylla.②Hydrangea nutrient solution pH value of screening tests showed that the pH value of 4.0-8.0 of the nutrient solution, Hydrangea macropHylla can grow normally in the pH value of 6.0 in the nutrient solution, its shape index, flowering traits and various pHysiological indices are better than others do, so, pH value of 6.0, slightly acidic nutrient solution best suited to the growth of Hydrangea macropHylla, while the pH of 3.0 and 9.0, very acidic and very alkaline nutrient solution not suitable for the growth of Hydrangea macropHylla.③Root's Anatomical Structure studies have shown that water culture conditions, the Hydrangea macropHylla had less root hairs, epidermal cells, thickening of the cortex cells were significantly increased, cell wall thinning, intercellular developed xylem obvious weaken, catheters have fewer root cap degradation, smaller and fewer starch grains in root cap; pH value of 3.0 and 9.0 of the nutrient solution under the conditions of Hydrangea macropHylla serious damage to epidermal cells, no root hair, cortex cells of serious contraction deformation, produced by the external suberin, large gaps between cortical cells; root-damaged, degraded, the epidermal cells of the injured was cork. pH4 and pH8 of the ground meristem cells in a slight contraction, pH8 root cap smaller, less starch grains, epidermal cells also damage and degradation, but to keep intact cortex cells, intercellular obviously, ventilation and well-organized, in the column evident within the primary xylem radiation angle.The root of the other treatments remaining intact, no significant difference.④Hydroponic Hydrangea macropHylla in plant morpHology control tests showed that both of the water spraying, and facilities, PP333, and CCC on the growth of Hydrangea macropHylla are inhibited. Among them, spraying PP333 and the CCC concentration reach in 1000mg·L·-1, water the CCC and PP333 concentration reach in 1.0 mg·L-1, the inhibitory effect is most obvious, but have a serious impact on plant growth and development, should not be used for hydroponic culture Hydrangea macropHylla plant type control. 100mg·L-1PP333 and CCC spraying, as well as 0.1mg·L-1PP333 and the CCC water, hydroponic fertilizers on the growth of Hydrangea macropHylla are safer but a better control effect.