Ask and " bring the maggot citrus " four times ? How to distinguish whether there are maggots in the citrus

Ask and " bring the maggot citrus " four times ? How to distinguish whether there are maggots in the citrus
The great researcher introduces to the reporter that the living beings of Institute of Plant Protection of Chinese Academy of Agricultural Sciences invade the chief scientist of research room incomparably, this kind of insect in citrus such as Shaanxi, Hubei shouts " The mandarin orange maggot " ,Have another name called the big real fly of citrus, only become harmful citrus. The reporter further knows, the big real fly of citrus is commonly called as the mandarin orange maggot. The adult has 10- 13 millimetres long body, wing exhibition is about 21 millimetres, yellowish-brown, the wing is transparent. The larva has 15- 18 millimetres long body, milky white. Distributed in Sichuan, Yunnan, Guizhou, Guangxi, Hunan, Hubei, Shaanxi of China and other places. A generation takes place in one year, survive the winter in the soil with the pupa, the fine adult ascends to heaven and becomes immortal for the first time after the rain from the last ten days of April to May. 6- Mating in July. The ovum is prolific in the young fruit of underpart of the tree crown, the larva becomes harmful in the fruit.
Will it be October 2008, Nanjing celestial the intersection of forest and a little difference of villa courtyards find " maggot's worm's citrus " ,It is actually a little real fly of citrus. The little real fly breeds ability more strongly strength on the weak side of resisting cold compared with the big real fly. The little real fly's adult of citrus has 6- 8 millimetres long body, wing exhibition is 16 millimetres, all are yellow and black and alternate. The larva has 10- 11 millimetres long body, milky white. Distribute over Guangdong, Guangxi, Fujian, Sichuan, Guizhou, Hunan of China. Besides becoming harmful citrus, also become harmful loquat, grape, pear, citrus, tomato, water-melon,etc..
In fact, before 2000, can hardly see the little such real fly within the territory of Jiangsu, because the temperature is on the low side in winter in Jiangsu, they can not suit, the pupa will be frozen to death. In recent years, the temperature is trended towards warmly with winter, and the adaptive capacity of the little real fly of citrus is strengthened, just survive the winter from some places in the South. After 2000, the department of agriculture and forestry in our province found the little such real fly in some places that Su Nan got near the north of Zhejiang, through " trap and kill " Adult, gushing out medicines, turns over and ploughs measures such as the land,etc., make the survival volume of the little real fly of citrus reduce greatly.
What is the maggot in citrus on earth
Scientific name ask " The big real fly of citrus " ,The celestial forest of Nanjing has appeared " The little real fly of citrus "
No matter citrus or little real fly, or the big real fly of citrus, generally chooses to produce the ovum inside the fruit, then depend on for a living and hatch inside.
The expert tells reporters, after the big real fly of citrus lays eggs, hatch out the larva within the fruit, it will be destroying the pulp constantly inside, wait for and wear and is always familiar with, and then turn into the pupa, get out of the fruit, fall to the land to cocoon while sewing, then the feather turns into the fly, then such generation upon generation of is circulated.
Reporter know relatively kind to prevent and cure fly its still interview, so long as the measure is put in place, insect pest will not take place generally. But why " Bring the maggot citrus " If you can't report repeatedly, come to light in by woolen cloth on newspaper? The reporter knows, the actually more serious inside one is " man-made calamity " .
Nanjing fruit tree expert and Zhang Gong says while giving an interview, " brings the maggot citrus " Relate with output and price of the citrus. The South abound with citrus, cultivated area too very old, but citrus sell kind price always. The citrus is apter to suffer from the insect pest at the same time, this makes maintenance cost of the citrus high. Maintain high to sell good price again, a lot of orchard would not spend big strength at protection against insects.

|