The Research To The Mechanism And Fertilizer Practice Of Potassium Chlorate On Longan Flowering Acceleration

This experiment used the "ShiXia" longan trees cultivated in field as test material and applied them with liquor of potassium chlorate in lOOg/m each mater of the tree crown and water CK on Oct.10^th .2005. The effect of potassium chlorate on longan's certain physiological items and flowering were studied. The result showed that:After the potassium chlorate's treatment, the treated trees' N,P,K content of leaves were higher than before; after treated ten to forty days, the treated trees' N,P,K content reduced, the reduce-rank of N content was lower than the P and K. After the treatment, the treated trees' Ca content was higher than before, 20d later it reduced; but had no effect on CK's Ca content. The treated trees' Mg content was higher than before, 40d later it reduced.After the treatment, the treated trees' starch content of leaves was higher than before, 30d later it rised, but had no effect on CK. After the treatment, it raised the treated trees' solube suger's content of leaves, C/N ratio of treated trees increased notably.After the treatment 10-50d, the treated trees'total chlorophy II content rised; but the solube protein content fell, 8d later it rised step by step and then higher than the CK's.After the treatment in 40d, the treated trees' ETH content of leaves, ZT and...