Study Of Growth、Nutrient Changes And Nutrient Diagnosis Of Oil Camellia Under Water And Fertilizer Coupling Effect

The paper discussed the coupling effect of drip-irrigated and fertilizer on oil camellia inthe natural conditions in Jiangxi Province. Studied the effect of water and Fertilizer Couplingon Camellia growth, changes of nutrient, and make the diagnosis of nutritional status. Themajor results as follows::(1) Under water and fertilizer coupling conditions, the growth of Camellia nutrition (treeheight, diameter, crown width, etc.) have significant growth, fertilization effect is more obvious.(2) Under different water and fertilizer coupling, oil camellia tablets and soil content of alarge number of elements. N, P, K elements with the fertilizer content relative to the controlincrease, but with the Camellia from vegetative growth to reproductive growth, N, K elementcontent showed a decline, while the P element has been in a downward trend, soil the content ofthe elements in the main by fertilization little influence.(3) Different water and fertilizer coupling made trace element content changes. Fe, Cuelement content was more stable, the Mn element showed an upward trend, Zn element contentdecreased.(4) Made the diagnosis of nutritional status under different water and fertilizer coupling ofcamellia leaf element to provide guidance for fertilization.N was dilution in treatment1and2,and P was deficiency in treatment1、4、5、7、8and9;In treatment3, Mg、Ca、K、Fe wasdilution and N showed sufficient; Cu、Fe、Mg、Ca was dilution in treatment5and N、P showedsufficient in treatment6.In summary, water and fertilizer coupling conditions promoted the Camellia growth, andpromote the absorption of camellia on N, P, K elements, but in order to further promote thegrowth of Camellia,we need put some trace element fertilizer in soil.