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红花锈菌〔Puccinia carthami(Hutz)Corda〕经调查和试验证实为全孢型单主寄生锈菌,在红花生长期中能产生五种类型的孢子。本菌以冬孢子及冬孢子堆碎片混杂于种子作远距离传播,连作地冬孢子在病残体上越冬,成为次年的初侵染源。当年田间采回的成熟冬孢子,不需其它处理,发芽率可达19.5%,人工涂抹及悬病体保湿接种,于平均气温19.3～20.3℃,经10～14天产生性子器。田间调查也证实病种及病地红花于苗期子叶、下胚轴及根部出现性子器,5～6天后产生锈子器及锈孢子,并在埋藏于土内的下胚轴及根部产生冬孢子堆。5月下旬灌溉及雨后于真叶上产生夏孢子,8月中旬高温期及秋凉期产生冬孢子。新疆本地红花感病重,国外引入红花成熟早,籽壳薄,出油率高,具有早熟避病特性。病地以种子量0.4%的15%粉锈宁拌种防效达到60%;净地以种子量0.2%及0.4%的15%粉锈宁拌种防效80～100%。病害流行期间喷布1:500倍15%粉锈宁二次有较好的防治效果。
Puccinia carthami (Hutz) Corda has been proved to be all-spore single-major parasitic rust by investigation and test. Five types of spores can be produced during the safflower growth stage. The bacteria to winter spores and winter spore fragments mixed in the seeds for long-distance transmission, even in winter overwintering winter spores, become the first year of the initial source of infection. Mature winter spores collected in the field that year, without other treatment, the germination rate of up to 19.5%, artificial coating and suspended disease body moisturizing inoculation, the average temperature of 19.3 ~ 20.3 ℃, 10 ~ 14 days after the device. Field investigation also confirmed the disease and disease in the safflower seedling cotyledons, hypocotyls and roots appeared sonifier, 5 to 6 days after the rust arbor and rust spores generated in the soil buried in the hypocotyls and roots produce Winter spore pile. In late May, the summer spores are produced on the true leaves after irrigation and rain, and the teliospores are produced in mid-August in the high-temperature and autumn-cool phases. Sick red flowers in Xinjiang is very serious, the introduction of safflower ripe early abroad, thin shell, high oil yield, with precocious disease avoidance characteristics. Soybean seedling amount of 0.4% of the 15% triadimefon seed dressing control effect reached 60%; Net to seed 0.2% and 0.4% of the 15% triadimefon seed dressing control 80 to 100%. Spraying 1: 500 times 15% triadimenon twice during the epidemic of disease has a better control effect.