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大白菜三大病害即软腐病、霜霉病和弧丁(病毒)病一直是京郊大白菜丰产稳产的限制因秦,1975年因三大病害造成总产减少15%。1.选用抗病丰产品种及杂交一代种,如玉泉12队的抱头青(但产量在后期缺水肥情况下不高)及抱头青×小青口等。并不断选纯复壮,播种前精选种子。2.精细整地,施足底肥。一般实行高畦栽培,做到地平、畦平。每亩施用一万斤以上的
The three major diseases of Chinese cabbage, namely soft rot, downy mildew and arc Ding (virus) disease, are the limiting factors for the high and stable yield of Chinese cabbage in the suburbs of Qin. In 1975, the total output was reduced by 15% due to the three major diseases. 1. Selection of disease-resistant varieties and hybrid varieties, such as Yuquan 12 team Baotouqing (but the output in the latter case of lack of water and fertilizer is not high) and Baotouqing × Xiaoqingkou and so on. And continue to select pure rejuvenation, selection of seeds before sowing. 2. Fine preparation, Shi enough foot fertilizer. In general, cultivation of high-spirits, to achieve the level of peace. Apply more than one kilogram per acre