Study On The Control Of "two Pets And One Disease" Of Jujube In Alar Reclamation Area

The dynamic investigation results of Dasineura datifolia,Tetr Anychus SP.and jujube fruit black spot are showed that Dasineura datifolia larvae had three high-incidence throughout a year,they were early May(7.11 leaf mites per leaf),early June(6.37 leaf mites per leaf),the end of June(4.56 leaf mites per leaf).The first and secend generation of larvae had the largest population and caused most serious injury.The occurrence rate of Tetr Anychus SP.had two peak periods in the year,which began with leaves damaged in the Mid-June,the population of Tetr Anychus SP.increased rapidly from the Mid-Julyt,the population reached a peak when 3.44 leaf mites per jujube leaf at the end of July.It began to occur in the field at the late August,with the growing of jujube fruit,the incidence of jujube black spot is on the rise.And the black spot disease of jujube fruit was reached the maximum rate on October 20.Pharmaceutical screening results showed that 350g/L imidacloprid suspension was 3000 times and20% acetamiprid soluble powder available 2000 times of Dasineura datifolia.fast and long duration in jujube midge during alternate use;1.8% abamectin EC 1000 times less readily,but long duration,can be used in Tetr Anychus SP.populations were low,20% three Azocyclotin SC 1000 times,34% spirodiclofen suspension 6000 times,20% times better to clofentezine suspension 1000 Dasineura datifolia available,and long duration in the large population base selection;430g/L tebuconazole SC 3000 times and 40%pyraclostrobin.tebuconazole SC 1000 times on the jujube black spot control effect,control effect were80.36%,76.79%,can be used as a common chemical control of black rot.Through one year field plot experiment,the control of "two insects and one disease" was completed.The results showed that 6 times of chemical control could effectively control the disease of Dasineura datifolia,Tetr Anychus SP.and black spot of jujube fruit.Spraying the whole jujube tree and the ground of jujube orchard with 3-5 wave Meidushiliu mixture in March,prevention and control of Dasineura datifolia.with350g/L imidacloprid suspension 3000 times and 20% acetamiprid soluble powder available 2000 times twice in May.At the end of June,spraying 1.8% abamectin EC 1000 times once when the occurrence of Tetr Anychus SP.was low.And using 430g/L tebuconazole SC 3000 times to control jujube black spot once at the end of August,20 days later,spraying 40% pyraclostrobin.tebuconazole SC 1000 times again.