论文部分内容阅读
夏白菜的生长期很短,适宜播种时间长(日平均气温在15—35℃情况下均可播种),一年可播多次,我地不少菜农年年种植夏白莱,均获得了高于其它蔬菜几倍的经济效益,他们的优质高产经验是: 一、选用良种,适时播种。一般都选用进口香港夏阳和夏白、热抗白45天三个优质良种,根据本地气候状况,安排在5—8月这段时间内播种,第一茬收后又种第二茬,一律先用“丰宁”拌种,然后再播种,以预防软腐病的发生。二、培育壮苗,合理密植。育苗时在离苗床地面60厘米左右搭棚遮荫挡雨,有条件的可用遮阳网覆盖。苗期勤施清淡粪水,苗龄必须控制在20天以内,以免因苗龄过长而造成减产。因夏白菜的叶球仅1公斤左右,而且包心紧实,所以,适度密植可获得高产。
Summer cabbage growth period is very short, suitable for planting a long time (average daily temperature in the 15-35 ℃ cases can be sown), a year can be broadcast many times, Higher than other vegetables several times the economic benefits of their high-quality high-yielding experience is: First, the selection of elite, timely sowing. Generally choose to import Hong Kong summer and summer white, 45 days of heat resistant white three high-quality seeds, according to the local climate conditions, arranged in the May-August period of sowing, the first crop after harvest the second crop, all first With “Fengning” seed dressing, and then sowing, in order to prevent the occurrence of soft rot. Second, nurturing strong seedlings, reasonable close planting. Nursery seedbed bed in the ground about 60 cm scaffolding shelter shade, conditions can be covered with shade net. Diligence Qin light manure, seedling age must be controlled within 20 days, so as to avoid too long due to seedling yield reduction. Due to summer cabbage leaf ball is only about 1 kg, and tight packing, therefore, moderately dense planting available high yield.