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黄瓜缺氮、磷、钾症状及其防治缺氮黄瓜缺氮素时，植株矮小，生长势弱，茎细硬，多纤维，整株叶片从下位叶向上位叶、单个叶片从叶脉间到全叶逐渐变黄。缺氮的植株座果数少，膨大不良，多为小头果，果实淡绿色。防治措施：抽蔓后亩追速效氮肥１０～２０公斤，低温时以硝态...
Cucumber lack of nitrogen, phosphorus and potassium symptoms and its prevention and treatment of nitrogen deficiency cucumber nitrogen deficiency, plant dwarf, growth potential is weak, stiff stems, multifibers, whole plant leaves from the lower leaves to the upper leaves, a single leaf from the veins to the whole Leaves gradually turn yellow. Nitrogen deficiency plants seat few, poor enlargement, mostly small fruit, fruit light green. Prevention and treatment measures: After pulling Mansha chase nitrogen efficiency of 10 to 20 kg, low temperature when the nitrate ...