Small rapeseed is cultivated in summer, usually planted in June and harvested in July; choose the varieties of white-leaf rape with strong heat resistance and fast growth, such as Jinan Baibang and Arrowhead White. Cultivation in autumn, usually in August, harvested from September to October; choose green gang, white gang rape varieties. Small rapeseed is cultivated in summer and autumn, which is prone to pests and diseases, and should be scientifically controlled.
1. Pest control: The main pests are aphids, cabbage caterpillars, and diamondback moths. The control of aphids can be sprayed with 25% Aikas 1000 times liquid or 50% sputum mist 2000 times liquid, or 250 grams of smouldering agent, and can also be trapped by yellow sticky insect board. For the control of Pieris rapae and Plutella xylostella, it can be sprayed with 2.5% vegetables and 1000-1500 times liquid or vegetable worms with 1000-1500 times.
2. Disease prevention and control: focus on prevention of downy mildew, black spot, and anthrax. For downy mildew, biological control can be adopted, that is, 250 g (salt) of pepper, ginger and garlic can be sprayed on 50 kg of water; 75% chlorothalonil WP 600 times or 72.2% anti-linger can also be used. The wettable powder 600 times liquid or the 40% ethyl phosphorus aluminum wettable powder 500 times liquid spray treatment. For black spot disease, the initial stage of the disease can be controlled by spraying with 50% carbendazim WP 600 times. For anthracnose, the initial stage of the disease can be sprayed with 70% methyl thiophanate WP 500-600 times or 80% anthrax Fame WP 800 times.
1. Pest control: The main pests are aphids, cabbage caterpillars, and diamondback moths. The control of aphids can be sprayed with 25% Aikas 1000 times liquid or 50% sputum mist 2000 times liquid, or 250 grams of smouldering agent, and can also be trapped by yellow sticky insect board. For the control of Pieris rapae and Plutella xylostella, it can be sprayed with 2.5% vegetables and 1000-1500 times liquid or vegetable worms with 1000-1500 times.
2. Disease prevention and control: focus on prevention of downy mildew, black spot, and anthrax. For downy mildew, biological control can be adopted, that is, 250 g (salt) of pepper, ginger and garlic can be sprayed on 50 kg of water; 75% chlorothalonil WP 600 times or 72.2% anti-linger can also be used. The wettable powder 600 times liquid or the 40% ethyl phosphorus aluminum wettable powder 500 times liquid spray treatment. For black spot disease, the initial stage of the disease can be controlled by spraying with 50% carbendazim WP 600 times. For anthracnose, the initial stage of the disease can be sprayed with 70% methyl thiophanate WP 500-600 times or 80% anthrax Fame WP 800 times.
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