荷兰豆常规种留种法一、巧回荚果，培育作种荷兰豆宜安排在采收第一、二批之后的第三批荚果，留作豆种。这样荚果大小定型一致，成熟整齐，便于施肥管理和采收。二、工施结美地，以双钾肥为主可在第二批荚果采收之后，每亩施复合肥５～８公斤或腐熟的猪粪灰４～５担，加水... Dutch beans conventional species to stay kind of law, Qiao Hui pod, nurturing cultivation of Dutch beans should be arranged in the first and second batches after the third batch of pods, reserved for beans. This pod size stereotypes, mature and tidy, easy to fertilizer management and harvesting. Second, the facilities of the United States, to double potassium-based pod can be harvested in the second batch after the application of compound fertilizer per acre 5 to 8 kg or decomposed pig manure 4 to 5 dan, add water ...