1. Aphid locusts are highly fertile and can breed for many generations a year. A large number of locusts often cluster on kale leaves and tender stems to suck juice. Control methods: In the early stage of locusts, 0% omethoate, dimethoate 1000-1500 times solution or phoxim emulsion 1000-1500 times solution were used.
Second, the leaf roller moth commonly known as leaf roller leafworm, with its larvae roll leaf damage, often the leaves with silk, hidden in the feeding hazards.
Control methods:
(1) In the winter, the dry grass and leaves around the planting site are cleaned and burned to eliminate the overwhelming insects.
(b) The discovery of a moth-eaten infestation of the kale leaf roller moth?
(c) When the leaf roller moths have a large number of fats, they are consuming 0% of safrole or 80% of dichlorvos or 50% of phoxim 1,000 to 1500 times. Amine naphthalene wettable powder can also be sprayed 1000 to 2000 times.
Third, the cabbage caterpillar adult insects during the day activities, eggs produced in the back of the leaves, larvae are feeding leaf meal. After 3 years of age, the harm was dispersed and sooner or later it was taken from the leaves, leaves or tender shoots, and the injured leaves were indented. Control methods: Artificial capture of larvae. A large number of larvae? Remote and | 0% of the dichlorvos EC or 1000-1500 times. Spraying with 40% omethoate 1500-2000 times also has some effect.
Fourth, soft rot Soft rot disease can be used in the early stages of the onset of 70% thiophanate-methyl WP ? A water 600 times, or 70% mancozeb WP ? A water 500 times spray.
V. Downy mildew can be used at the beginning of the onset of downy mildew 50% fasting WP? A water 1000 to 1200 times, or 58% metalaxyl MnZn WP? A water 500 times spray.
Sixth, cabbage caterpillar, diamondback moth, aphid control cabbage caterpillar, diamondback moth, aphid, can choose 50% phoxim EC? A water 800 to 1000 times, or 2.5% Kung Fu EC? A water 2000 to 3000 times spray.
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