黍蚜

Scientific name Phopalosiphum padi (Linnaeus) Homoptera, Polygonaceae. Alias ​​缢 缢 蚜 蚜, millet 蚜 缢, 缢 缢 蚜, 禾 缢 缢 缢 缢 蚜 蚜 蚜 蚜 蚜 蚜 蚜 蚜 蚜 蚜 蚜Distributed throughout the country.

The host's first host is Tao, Li, and Ye Yemei; the second host is wheat, barley, rice, sorghum, corn, and grass weeds.

The culprit is that the nymphs suck the leaves, stalks and tender juices, not only affect the normal growth of plants, but also spread virus disease.

Morphological characteristics Wingless orphan female body length 1.9mm, wide oval. Living dark green, embedded with yellow-green lines, was thin powder. The base of the ventral tube has rust-colored lines around it. Antennae 6 knots, black, longer than body half. There is no handle in the chest and abdomen. The frontal tumor bulges. The sturdiness is longer than the base section of the midfoot and is 2 times longer than the width. Abdominal tube is oval in shape. The tail is long conical with 4 hairs. The winged female is 2.1mm long, long oval, living head, chest black, dark green belly, with black markings. Sections 7 and 8 have a transverse belt in the abdomen. Abdomen black. Antennae Section 3 has 19-28 round secondary sensory circles and 2-7th Section 4th.

Life habits are 10 to 20 years old. Cold areas in the north

Spawning on plums such as Prunus edulis, Peach, Plum, and Prunus triloba etc. overwintered, and then migrated to the gramineous plants after late spring breeding. Is different from the host full cycle type. In the warm wheat area, wingless and parthenogenetic larvae and Ruojiao can be used for wintering in winter wheat fields or grass weeds. Insufficient life cycle in the camp, winter warming is still active in wheat seedlings. In summer and autumn, it mainly damages corn. After the wheat is harvested, it is transferred to the scorpion and the self-producing wheat seedlings. After the autumn in the north, it migrates to the grass in the winter, and in the winter wheat area or the winter wheat and spring wheat mixed area, after the unearthed wheat in the late autumn, it is moved back to the wheat field for breeding.禾 缢 缢 缢 tube 蚜 发育 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30 30. The natural enemies were with Mai Changguan.

Prevention Methods (1) Forecasting. When the panicle planting rate reaches 50%, 100 plants have 200-250 average alfalfa or 70% alfalfa plants at the initial stage of alfalfa, and 100 plants have 500 alfalfa averages. (2) Agricultural Control Law 1 Selection of insect-resistant varieties. Such as: "Lumai 23". 8 rational layout. Winter wheat mixed area, to minimize the area of ​​winter wheat or winter wheat and spring wheat were planted separately, so as to reduce the damage. 8 timely sowing. Appropriate late sowing of winter wheat, early spring sowing timely. 4 Reasonably apply fertilizer and water. (3) Biological control Reduce or improve the method of application and avoid killing natural enemies in wheat fields. Using natural enemies such as ladybugs, hover flies, grasshoppers, and cockroaches and bees, it has been determined that adults of coccinella septempunctata, and more than 100 eels of eclipses, can use the equivalent system of wheat cockroaches and natural enemies to produce a variety of natural enemies. The restaurant units and calculation methods used to accurately determine the comprehensive control capacity of composite natural enemies were based on other measures. The index of the control of natural enemies is measured, and this indicator is combined with chemical defense indicators and equivalent systems to provide guarantees for the full use of natural enemies. If necessary, it can be artificially propagated to release or assist natural enemies; it can effectively control locusts. When the enemy is unable to control the wheat bran, use 0,2% matrine (Ketzebolin) 400 times solution or chlortetracycline (spore content 2 million pieces/ml) 250 times, 50% or more. 40% Omethoate 2000 times, 90% kill effect, and can protect natural enemies. (4) The following comprehensive prevention measures may be adopted in areas or fields where the above measures do not work. 1 In the wheat yellow dwarf epidemic area, the disease is mainly treated at the seedling stage, using 0.3% of 75% 3911 EC, adding about 7% of the amount of fresh water, spraying on the wheat seed, stirring while spraying. It is also possible to use 50% chlorinated pine oil 150ml, 5kg of water, spray on 50kg of wheat, and soak for 6-12 hours. 8 with 3% carbofuran granules or 5% aldicarb Granules, 5% 3911 granules, 1.5kg caps per 667m2, the effective period of up to 1-1.5 months. 2 During the epidemic period of non-yellow dwarf disease, it is important to control wheat bran at the ear stage, if necessary, field spray 2.5% WP or 10% imidacloprid (one-time net) wettable powder 2500 times or 2.5% high-permeability imidacloprid wettability Powder 3000 times solution, 50% anti-inferiority WP 3500-4000 times, 18% hypertonic omethoate EC 1500 times, 50% malathion EC 1000 times, 20% Confodol Solvent Or 90% of Acrylic Soluble Powder 3000-4000 times, 50% of Acetate Loose Emulsion 2000 times or 2.5% of deltamethrin EC 3000 times. 40% Huifeng No.1 EC can also be used, 30mL per 667m2, 40kg of water, 99% efficiency, better than 40% omethoate. 4 40% of Dimethoate EC 50ml can be used per 667m2 in arid regions, 1-2kg for water, 15kg fine sandy soil, or 80% dichlorvos EC 75ml, and 25kg soil mix. The wheat can be withdrawn early in the morning or in the evening. In order to protect natural enemies, we choose to use pesticides such as anti-vigilance that have little lethal effect on natural enemies. 5 When wheat bran and powdery mildew are mixed together, spraying 11% of oleocalin EC 100ml, 50kg of water, the effect of controlling wheat bran is the same as that of omethoate, and the effect of controlling powdery mildew is equivalent to that of triadimefon. 8 Try 20% dichlorvos heavy smoke agent 9-10.5kg/hm2, smoke 0.5 hours later, the smoke gradually settled on the crop, control efficiency of about 80%.

In areas where this area is heavy, it is necessary to pay attention to the locusts at the seedling or jointing stage to prevent and control the locusts at the base of the insects. The control of the panicle stage should reach the prevention and control index at the initial stage of wheat grouting, and the ratio of hazards to damage is less than 1:120. In time of heavy rain prevention and treatment.

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