It has been proved by natural infection and artificial inoculation that cross infection appeared between larger and smaller apple trees. Some mainly cultivars of larger apple trees can be infected by this disease.

  • 经自然感病和人工接种证明,大、小苹果上的黑星病菌可以交互侵染,目前一些主栽的大苹果品种均能感染此病。

  • 互联网摘选 2025-01-20 11:59:12

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