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夏季,人们都喜欢吃点绿叶青菜,以补充天热消耗的维生素C和矿物盐等营养成分。但白菜性喜冷凉,在夏季高温、强光照、多暴雨的气候条件下,白菜的光合作用减弱,根系对水肥的吸收能力也较弱,而呼吸作用却很强,植物体处于入不敷出的饥饿状态,加上高温高湿条件有利于病菌的繁殖蔓延,因此夏季种的白菜(我们称它为热白菜)往往容易死苗,个体弱小,产量低,纤维素多,组织老化,芥子甙等有苦味的物质含量多,食用品质差。能否使热白菜达到高产优质呢?我们根据自己多年的试验研究以及菜农的丰产经验。认为,只要掌握好以下栽培技术环节,就能够让热白菜既优质又高产。一、选用良种:南昌地区历年选用广东的“克叶白”(又称“广白”)种植,该品种抗逆性较强,但叶柄粗硬,纤维多,品质差。1982年我们从
In summer, people like to eat green leafy vegetables, to supplement the heat consumption of vitamin C and mineral salts and other nutrients. However, the cabbage likes the cold, under the conditions of high temperature, strong light and heavy rain in summer, the photosynthesis of cabbage is weakened, and the absorption capacity of water and fertilizer to roots is weak, while the respiration is very strong and the plant is in deficit State, coupled with high temperature and humidity conditions conducive to the propagation of germs spread, so the summer species of cabbage (we call it hot cabbage) are often easy to die, individual weak, low yield, cellulose, tissue aging, mustard glycosides, etc. Bitter substance content, poor food quality. Can make hot cabbage to high yield and quality? According to our many years of experimental research and vegetable farmers rich experience. That as long as the mastery of the following aspects of cultivation techniques, we can make hot cabbage both high quality and high yield. First, the selection of elite: Nanchang region over the years use of Guangdong’s “g leaf white” (also known as “broad white”) planting, the varieties of strong resistance, but the petiole coarser, more fiber, poor quality. We from 1982