The yellowing of the leafy leaves may be a frosty mildew, and the seedlings will appear green and yellow, withered and dead, and the plant leaves will appear nearly circular or polyarnic lesions, which are pale yellow. When the humidity is large White mold, black stems appear in severe cases, and the stems are dead in the later period. After the onset, the prevention and treatment of 75%peribilobe can be sprayed with 500 times liquid to the wettable powder, sprayed every 7 to 8 days, and sprayed 2 to 3 times in a row, which can play a better prevention and control effect.
Prevention and treatment method
Aphids are the main venical veneer medium. Press at the same time. In the early stage of the onset, 1.5%plant can be used with 100 times liquid, 0.5%mushroom protein polysaccharide 300 times liquid, 20%liquid liquid of 20%natactrium hydrochloride · copper acetate powder, 5%bacterial poisoning water, 200 times liquid. 10%mixed fatty acid lactatics 100 times liquid and other potions such as spray prevention and control. Spray every 5 to 7 days, spray 2 to 3 times in a row. It should be noted that in order to restore normal growth as soon as possible, the Ruipei zinc should be added when spraying the drug, the effect of the king is more, and the leaf fertilizer of the king of the king.
Introduction to the oleoma
Oil -wheat dish is named oil, perfume and lettuce. The genus of chrysanthemums, the original species is produced along the Mediterranean coast. One year or two -year herb. The root system, short stems, milk, leaves alternate, oblong to lanceolate, full to feathery deep cracks, the base with lanceolate leaf ear, stems, slightly bitter or no, head -shaped inflorescence, head -shaped inflorescence, head inflorescence, head -shaped inflorescence, head inflorescence, head inflorescence. Flower yellow. The germination temperature and the growing temperature are 10 to 25 ° C. Sexuality is full of light. If it is too shade, it is easy to grow. It is not strict with the soil.