论文部分内容阅读
1991年7月6日至20日,中国烟草总公司组团,对美国烤烟生产及育种进行了考察。现将美国烤烟育种专题汇报如下。美国烟草育种以烤烟为主,也进行白肋烟和马里兰烟育种。我们这次考察的重点是烤烟育种。一、美国烤烟育种(一)育种目标美国烤烟育种目标是根据工业需要、农民的要求、烟叶市场(烟叶公司)的需求及当地病虫害发生的种类而确定的。因此,当前烤烟
From July 6 to July 20, 1991, China Tobacco Corporation organized a delegation to inspect the production and breeding of flue-cured tobacco in the United States. The United States now report on the topic of flue-cured tobacco is as follows. Tobacco breeding in the United States is dominated by tobacco, and burley and Maryland tobacco are also bred. The focus of our study is flue-cured tobacco breeding. First, the United States breeding of flue-cured tobacco (A) Breeding objectives The goal of breeding flue-cured tobacco in the United States is determined according to industrial needs, farmers’ requirements, the needs of the tobacco market (tobacco companies) and the occurrence of local pests and diseases. Therefore, the current flue-cured tobacco