北京大刺黄瓜具有早熟、质脆味美、品质优良的特点,它又是冬春缺菜时期温室和阳畦栽培的主要品种;但最大的缺点是容易感染霜霉病(亦称露菌病,俗称跑马千)。每年芒种(6月上旬)前后,也就是刚刚采收过第一条黄瓜以后,这种病害就发生了。到6月底或7月初,北京大刺黄瓜即完全枯死,采收期只有40天。病害比较轻的年分,每株可以采收5—7条黄瓜,每亩可以采收5,000斤左右;病害重的年分,每株只能收1—2条黄瓜,每亩只 Beijing cucumber with precocious, crisp and delicious, good quality characteristics, it is the winter and spring vegetables and greenhouse cultivation Yang Yang lacking varieties; but the biggest drawback is susceptible to downy mildew (also known as alginosis, commonly known as Happy 1000). This disease occurs once every year (in early June), ie after the first cucumber has been harvested. By the end of June or early July, Beijing cucumber is completely dead, harvested only 40 days. Lesser disease years, each plant can harvest 5-7 cucumbers, per mu can harvest about 5,000 pounds; disease heavy years, each plant can only receive 1-2 cucumbers per mu