Effect Of Earthworm On The Content Of Calcium In Rhizosphere And Fruit To Mangifera Indica Linn

This experiment mainly carries on four aspects:Effects of earthworm on the physical and chemical properties of soil;Effect of earthworm on the absorbing and transporting of the Calcium;Effect of the vermicast on the root of the Mangifera indica Linn and effect of leaves' nutrition and fruit's quality of Mangifera indica Linn with different manurial treatments.The objective is to studies the effect and mechanism of earthworm how to effect the content of the Calcium in the root and the fruit.And then find out the way to create an appropriate environment for the root's growth and absorb in the south red loam.The main conclusions as follows:1,The earthworm which used has clearly improved in different organisms,and finally produces the vermicast.The result proved that earthworm breed in the hole which fertilizing cow dung is an Easy and feasible fertilizer regime;2,Vermicast has good effect to the organism treated by Calcium,can absorb and transport the Calcium of the organism,increase the biologic validity of Calcium.So vermicast can improve the soil physical chemical characteristics,even provides the plant enough nutrition.3,Compare to the cow dung and soil,vermicast can promotion root growth distinctly and increase new roots' quantity.Compare to the other 2 treatments,the weight of root in vermicast is 1.26 times as in cow dung,2.4 times as in soil;and the vermicast can clearly improve the root's micro-enviornment4,Compare to other treatments,earthworm breed in the hole which fertilizing cow dung can increase the leaves' nutrient content of N,P,K, Ca,and Mg,and correct the Mangifera indica Linn tetany that lack Calcium;5,Earthworm breeds in the hole which fertilizing cow dung can improve the yield of Mangifera indica Linn and fruit quality.Its average yield per plant is 1.13 times as fertilizing cow dung in the hole,and 1.21 times as the CK;the result number is 1.14 times as fertilizing cow dung in the hole,and 1.76 times as the CK.And it can improve the weight per fruit,fruit's sugar content and fruit's TSS,reduce the fruit's rigidity,extreme increase the fruit's economic value,nutrient value and the storage time.