The comprehensive prevention and treatment measures of leeks
One, leeks and roots damage symptoms
The crickets, which are also known as earthworms and root hoppers, are the larvae of the late-spotted larvae of Diptera. The larvae clustered on the shoots and bulbs of the leeks to feed on the ground. In spring and autumn, the white stems of the soil were eaten, causing the root rots. After the damage, the leeks of the leeks wilted and drooped until the yellow leaves died. When the temperature is high in summer, the larvae move downwards, which mainly damage the bulbs, causing the large bulbs to die when the whole bulb rots seriously. After the leeks are harmed by the leeks, the wilting seedlings can not germinate new shoots. Some sprout germinating new shoots, but they are very weak and have no economic value.
Second, leek root control methods
1, agricultural control methods: early spring when the beginning of growth or when the fall is close to the cover film, select the warm weather, open the surface of the pier piercing soil, exposing the "Hu Hu, drying 5-7 days, can kill some partridge.
2, physical control of adult methods: the use of sweet and sour trap induced insects, methods: the sugar, vinegar, wine, water, trichlorfon by 3:3:1:10:0.5 ratio into a solution, into the pot, each Put 2-3 pots of mu, you can trap adult insects.
3, biological control methods: application of parasitic parasitic worm Nematode control.
4, chemical control:
(1) In the adult emergence period (late April, late June, mid-October), spraying 3000 Chrysanthemum emulsifiable concentrate 3000 times solution or 2.5 enemy killing 3000 times solution can kill silkworm adults;
Leek root root caries damage symptoms and prevention methods
(2) The larvae were found to be in danger during the prosperous period (in early May, late July, late October and late October). The leeks were found to be small and thin, and the tips of the larvae began to yellow and become soft and lodging. Take medication to prevent and cure. Mu Kang Kang 2 kg watered with 500 kg of water; also can choose to use the 50? Dioliao EC, 1? Eforing EC.
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