上海的三种菜用豌豆（一）食豆──大青豆四号罐藏青豆（豌豆）为外贸出口创汇的热门货。而我国现用品种豆粒小，产量低，加工性状差，远远不能适应国际市场的需要。解决大粒青豆专用品种、丰产栽培、留种技术等关键问题，成了工农业外贸部门燃眉之急。上海农学院现已选育... Shanghai’s three kinds of vegetables with peas (a) beans - large beans on the 4th green beans (peas) for the export of foreign exchange products. The current varieties of beans in our country are small, low yield, poor processing properties, far from being able to meet the needs of the international market. Solve the special problems of large grain green beans, high-yield cultivation, seed-keeping techniques and other issues, has become the pressing task of the industrial and agricultural foreign trade sector. Shanghai Agricultural College now breeding ...