Effects Of Edible Fungus Residue On Soil Fertility, Nutrients Absorption And Yield In Rice

In China, the utilization of edible fungus residue is very low because most of edible fungusresidue was abandoned or burned which also would bring out pollution to our environment. It hadbeen reported that the edible fungus residue was a good material for organic fertilizer due to itsrich in available nutrients. In order to investigated the effect of edible fungus residue applicationon soil fertility, dynamic changes of soil nutrients contents,N,P and K contents, absorption anddistribution in rice organsduring rice growth, rice grain yield in maturity were monitored withfield and pot experiments.The results were as follows:(1)The effect of edible fungus residue had significantly enhanced the soil fertility. Underfield experiment conditions, with the increase of amount of edible fungus residue application, thesoil organic matter(SOM) and the supply ability and maintain ability of soil availablephosphorus(P)、potassium(K) was increased to12%、59%、15%respectively under C100F100treatment, over the CK treatment; the supply ability and maintain ability of soil availablenitrogen(N) was increased to12%under C100F50treatment, over the CK treatment. Under potexperiment conditions, with the increase of amount of edible fungus residue application, the SOMand the supply ability and maintain ability of soil available P was increased to44%、245%respectively under C100F100treatment, over the CK treatment; the supply ability and maintainability of soil available N、 K was increased to18%、67%respectively under C0F100treatment,over the CK treatment.(2) The effect of edible fungus residue had significantly enhanced the on nutrients contentanda bsorption of rice. Under field experiment conditions, with the increase of amount of ediblefungus residue application, the N、P content of rice was increased to46%、59%respectively underC100F50treatment during harvesting stage, over the CK treatment; the K content of rice wasincreased to13%under C100F100treatment, over the CK treatment.Under pot experimentconditions, with the increase of amount of edible fungus residue application, the N content of ricewas increased to17%under C50F50treatment, over the CK treatment; the P content of rice wasincreased to14%under C0F100treatment, over the CK treatment; the K content of rice wasincreased to133%under C100F100treatment, over the CK treatment. Under field and pot experiment conditions the N、P、K absorption in rice was increased highest under C100F100treatment, over the CK treatment, in particular,the N、P absorption in grain and the K absorptionin stem was significantly increased under C100F100treatment, over the CK treatment.(3) The effect of edible fungus residue had significantly enhanced photosyntheticcharacteristics of rice functional leaves. Under pot experiment conditions, with the increase ofamount of edible fungus residue application, the SPAD and photosynthetic rate was increasedsignificantly under C100F100treatment, over the CK treatment. It could delay senescence in riceleaf, but could cause late-maturing.(4) The effect of edible fungus residue had significantly enhanced rice yield. Compared withthe application of chemical fertilizer or edible fungus residue only, the combined application ofchemical fertilizer with edible fungus residue had higher inhancement on yield. Under fieldexperiment condition, with the increase of amount of edible fungus residue application, the riceyield was increased to31%under C100F50treatment, over the CK treatment.In conclution, edible fungus residue is beneficial to rice yield and soil fertility.As a result, ourresearch work could bring some instructive techniques to the resource utilization for edible fungusresidue which provide theoretical basis and technical support to recycling agriculture.