Utilizing predation mite-amblyseius cucumeris oudeman is the new method and usage of natural enemy control pest mite of citrus
The present invention relates to a kind of operation technique that can be used for replacing the harmful mite natural enemy predation mite of chemical pesticide, particularly a kind of utilization predation mite-amblyseius cucumeris oudeman is prevented and treated the new method and usage of citrus (also comprising sweet shaddock, navel orange) evil mite as natural enemy.
At present: the generally generation of various farm-forestry crops evil mites (as two spotted spider mite, blister mite, tarsonemid, various flour mites etc.), the harm that the runs wild big problem that become international.In nineteen sixty-five International Biological Programme (IBP) meeting held of Rome, ITA, just once tetranychid (two spotted spider mite) and trypetid, black peach aphid, rice borer, armored scale were classified as five major pests, as the natural enemy of international joint research and the target of agricultural synthesis improvement.Small worm becomes terrible disaster, has been the development trend of many different insect pests in China's agricultural in recent years.Particularly agricultural will be to be subjected to impacting one of maximum industry after the China joined WTO, and agricultural byproducts will be faced with significant challenge, and wherein residue of pesticide are one of problems anxious to be solved.Produce pollution-free food, reduce environmental pollution, improve the ecological environment, caused the pay attention to day by day of governments at all levels and scientific research popularizing department.But insect of the present crops of China and evil mite still endanger seriously.Popularize national wheat belt as wheat red mite harm, the harm of paddy rice tarsonemid can cause underproduction 30-60%, citrus red mite, blister mite are the important harmful mites in China citrus producing region, have a strong impact on the yield and quality of citrus, it is many that booth is dredged edible fungus damage mite kinds such as dish, flowers, tea place, mushroom, white fungus, mushroom, and harm is serious.But China tackles the various harmful mite of crops at present still based on chemical control, strawberry, cotton, apple, citrus, matrimony vine year medication number of times reach 10-20 time, per season medication number of times such as the mushroom in the edible mushroom, white fungus, mushroom reach 5-8 time, city trees and shrubs flowers 5-6 time are caused the severe contamination of atmosphere, waters or local area ecological.China's tealeaves exports again and again in recent years and is obstructed, and important reasons is exactly the dicofol severe overweight, and China's citrus individually reaches 30 times because of reach 10-20 time in order to the agricultural chemicals access times of preventing and treating every year, and evil mite pesticide resistance increases severely, and has reached the condition that pasts medical help.Utilizing useful mite class, control pest mite class, is the optimal path of the current mite of control evil in the world.Europe, some companies of north america have carried out the batch production production of natural enemy (insect, mite class) at present, the natural enemy that the North America commercialization is produced (insect, predation mite) has been widely used on land for growing field crops, greenhouse and part orchard and other horticultural crops, prey on the acarid control European red mite as annual utilization of Washington state, a year minimizing agricultural chemicals expense reaches 5,000,000 dollars; The greenhouse flowers of national 70-75% such as Britain, Finland, Sweden, vegetables are mainly with predation acarid control two spotted spider mite, thrips, tarsonemid, the west that Australia utilize to introduce is blind walks mite, and once discharging on 3000 hectares of Victorias' apple, peach becomes classical biological control example.Though China the 70-80 age in Guangxi, ground such as Guangdong, Fujian, Sichuan carry out and utilize that the west is blind walks mite and endemic species De Shi genus amblyseius berlese, the blunt hungry acarid control European red mite of Niu Shi, yellow tea mite obtain certain success, a large amount of production difficulty of these traditional predation mites are big, artificial propagation cost height, promote the use of and be difficult to the formation scale.
What be worth emphasizing is, though successfully raise abroad as the amblyseius cucumeris oudeman of predation one of mite and to breed, the applicant plants mite from external introduction amblyseius cucumeris oudeman (Amblyseius cucumeris) first, also succeeds in developing artificial feed prescription of this predation mite and large scale artificial breeding's raising method (with applying for a patent simultaneously) through arduous exploration for many years.But it is reported that the amblyseius cucumeris oudeman of breeding mainly is used in the natural enemy usefulness of greenhouse as insect-thrips of control cucumber, capsicum abroad, with the generation that prevents various thrips with break out harm.Find that also the thrips that can be used as the big Tanaka of natural enemy control and prevention endangers.In addition, also useful amblyseius cucumeris oudeman effectively controls in the greenhouse to eat the reports of the harm of tarsonemids and Tetranychus urticae on the strawberry more, but does not see the report that uses in the citrus garden: promptly also find abroad to have to use amblyseius cucumeris oudeman as the report of controlling and prevent evil mite natural enemy application facet such as citrus red mite and blister mite.
The purpose of this invention is to provide a kind of utilization predation mite-amblyseius cucumeris oudeman is the new method and usage of natural enemy control pest mite of citrus; make that to have control efficiency good; the continuous and effective time is long; can significantly reduce medication number of times and drug cost; reduce residue of pesticide; significantly improve output and quality, favourable preserving the ecological environment.
The present invention realizes with following technical scheme: find that according to investigation citrus red mite, blister mite are main evil mites in the citrus garden, common peasant will spray 10-20 agricultural chemicals every year and prevent and treat.In the period of growth of the crop,, improve commodity value especially, almost use (beating) agricultural chemicals each week, cause serious pesticide pollution in order to reduce " casting skin fruit " rate.The province, south is many, and there are many difficulties in chemical control that The mountains are high and the roads are steep at mountain area plantation citrus, often jeopardizes the spray medicinal herb grower people during wherein to the spray medicine of the height of tree, pollutes surrounding enviroment.Evil such as citrus red mite, blister mite mite fertility is strong, main activities influences control efficiency less at blade back fruit face, soup contact-making surface, adds these two kinds harmful mite intrinsic rate of increase height, and pesticide resistance is strong, studies show that according to relevant it has strengthened 10-30 doubly to the common pesticides pesticide resistance.Some agricultural chemicals working concentrations more and more higher (from 500 times to 2000 times), many agricultural chemicals are invalid to becoming mite, ovum, so two spotted spider mite, blister mite become primary evil mite on the citrus, belong to worldwide problem.For this reason, innovative characteristics of the present invention is that we are bold in innovation and works out the amblyseius cucumeris oudeman that utilization batch production in enormous quantities at present (commercialization) produces and prevent and treat citrus as natural enemy (predation mite), the honey shaddock, the new purposes of evil such as two spotted spider mite and blister mite mite harm on the navel orange, the method of its use comprises: the control time is grasped and uses special-purpose release to discharge beneficial acarid control in the fruiting period in July to the August (or after July) in every year, the position that discharges amblyseius cucumeris oudeman is selected on the mobile jib of orange tree, the handing-over position that preferably is positioned at tree crown branch and mobile jib discharges, and the burst size of every strain orange tree is 300-500.
Compared with the prior art, the present invention uses through the test examination of part citrus field and shows that it is remarkable to have result of use, and two spotted spider mite amount and blister mite amount all can reduce 85-90% on the orange tree of biological and ecological methods to prevent plant disease, pests, and erosion garden, the black fruit of citrus rate only about 2%, comparison reduces about 90% according to garden black fruit rate.Fruit tree is from generally spraying insecticide to March next year after discharging amblyseius cucumeris oudeman August then again, year reduces agricultural chemicals access times 6 times, therefore biological and ecological methods to prevent plant disease, pests, and erosion citrus garden natural enemy quantity, kind also improve 60-80% than chemoprevention garden, biological and ecological methods to prevent plant disease, pests, and erosion can be saved the agricultural chemicals drug cost than every mu of chemoprevention and be reached 30-40 yuan, the fruit fruit is full greatly, and output height, quality are rich in gloss, commodity value height well, press normal year fruits price, every mu can increase income 1500-2000 unit.The present invention has also created condition because of the maturing stage minimizing applications of pesticide number of times of growing up at citrus to producing green fruit, also helps and improves the ecological environment.
Below in conjunction with concrete application example the present invention is described in further detail, the present invention also has following some technical characterictic in the specific implementation:
One, at first also to note carrying out the work of chemoprevention integrated control, promptly behind autumn growth, discharge 10-20 days before the amblyseius cucumeris oudeman, must in full garden, citrus garden, carry out a chemical control (pesticide spraying) in advance, control is mainly to liking leaf miner, coccid, aphid, wearing scall, reduce the radix of two spotted spider mite, blister mite simultaneously, be preferably in every leaf two spotted spider mite quantity within 5, blister mite quantity 10-20 only within the time discharge.Aged tangerine tree can discharge amblyseius cucumeris oudeman in late July to early August, and young, middle age, the tangerine tree can discharge the mid or late August behind autumn growth.
Two, try one's best to reduce and cultivate multiple weeding number of times in the citrus garden of using evil mite natural enemy amblyseius cucumeris oudeman to make the predation acarid control, also must keep the shallow root system weeds or carry out the sward cultivation, makes predation mite and other natural enemies that good survive the winter summer place and bridging species be arranged.