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一、症状在保护地及露地后期栽培条件下生产黄瓜时,常出现曲形瓜、尖嘴瓜、细腰瓜、大肚瓜等,有时出现苦味瓜。二、病因1.曲形瓜产生曲形瓜有生理或物理原因。生理原因多因营养不良,植株瘦弱造成,如光照不足、温度、水分管理不当,或结瓜前期水分正常,结瓜后期水分供应不足,或伤根,病虫为害引起。尤其是高温,或昼夜温差过大过小,光照少,低温低等条件易发生。有的花期子房就表现出弯曲状态,随幼果长大弯曲加重,曲形瓜在最初或最后的果穗发生多。此外,雌花或幼果被架材及茎蔓等遮阴或夹长等
First, the symptoms in the protected areas and open field production conditions cucumber production, often appear melon melon, melon, melon, melon, etc., sometimes appear bitter melon. Second, the etiology 1. melon melon produce melon melons have physiological or physical reasons. Physiologically due to malnutrition, thin plants caused, such as lack of light, temperature, improper water management, or water loss in the early stage of normal Guazhu, late Guazhou inadequate water supply, or injured roots, pests and diseases caused. Especially high temperature, or day and night temperature difference is too large too small, less light, low temperature and other conditions prone. Some of the flowering ovary showed a curved state, with the growth of young fruit grow more bending, melon melon occurred in the earliest or last ear more. In addition, the female flower or young fruit is covered by shelves and stems and other shade or clip length