黃瓜畸形主要表現為四種,其主要原因是:
一、jiantougua。chuxianjiantouguadezhuyaoyuanyinshihuangguadanxingjieshiruoqiekaihuaqicihuameiyoushoujing,zaochengguoshijianduanyingyangbuliang。fangzhicuoshiweizaihuangguakaihuaqichuangzaolianghaodeshoufentiaojian,rufangfeng、人(ren)工(gong)授(shou)粉(fen)等(deng)。此(ci)外(wai),植(zhi)株(zhu)生(sheng)長(chang)早(zao)期(qi),氮(dan)肥(fei)供(gong)應(ying)不(bu)足(zu),使(shi)得(de)植(zhi)株(zhu)莖(jing)稈(gan)細(xi)而(er)堅(jian)韌(ren),也(ye)會(hui)產(chan)生(sheng)尖(jian)頭(tou)瓜(gua)。防(fang)治(zhi)措(cuo)施(shi)為(wei)施(shi)入(ru)尿(niao)素(su)等(deng)含(han)氮(dan)量(liang)較(jiao)高(gao)的(de)肥(fei)料(liao)。
二、大肚瓜。形成的主要原因有:1、黃瓜雌花受精不完全,隻在瓜的先端產生種子,導致先端果肉組織特別肥大,呈大肚瓜頭。防治措施為創造良好的開花授粉條件。2、植株缺鉀而氮肥過量。防治措施為施硝酸鉀、草木灰等,或用0.3%的磷酸二氫鉀液噴施植株葉麵。3、黃瓜生長前期缺水,而後期大量供水。防治措施為整個生長期均衡供水,保持土壤見濕。
三、彎曲瓜。形成的主要原因有:1、黃瓜生長期間,受高溫、高gao濕shi及ji不bu良liang氣qi候hou等deng因yin素su的de影ying響xiang而er產chan生sheng彎wan曲qu瓜gua。防fang治zhi措cuo施shi為wei取qu一yi牙ya簽qian,紮zha在zai產chan生sheng彎wan曲qu瓜gua部bu位wei的de黃huang瓜gua蔓man上shang,緊jin接jie著zhe澆jiao一yi遍bian水shui,次ci日ri瓜gua條tiao即ji可ke伸shen直zhi,此ci時shi再zai將jiang細xi牙ya簽qian拔ba出chu,黃huang瓜gua仍reng能neng正zheng常chang生sheng長chang。2、黃huang瓜gua在zai生sheng長chang過guo程cheng中zhong,受shou外wai物wu阻zu擋dang而er不bu能neng正zheng常chang伸shen展zhan,以yi致zhi產chan生sheng畸ji形xing彎wan曲qu。防fang治zhi措cuo施shi為wei黃huang瓜gua坐zuo瓜gua以yi後hou,去qu掉diao阻zu擋dang黃huang瓜gua生sheng長chang的de外wai物wu,使shi黃huang瓜gua正zheng常chang伸shen長chang。
四、蜂feng腰yao瓜gua。黃huang瓜gua雌ci花hua受shou粉fen不bu完wan全quan,易yi發fa育yu成cheng蜂feng腰yao瓜gua。黃huang瓜gua受shou粉fen後hou,植zhi株zhu中zhong營ying養yang物wu質zhi供gong應ying不bu足zu,幹gan物wu質zhi積ji累lei少shao,也ye易yi形xing成cheng蜂feng腰yao瓜gua。防fang治zhi措cuo施shi為wei加jia強qiang營ying養yang,特te別bie是shi坐zuo瓜gua期qi要yao加jia大da肥fei水shui供gong應ying,保bao證zheng有you充chong足zu的de養yang分fen積ji累lei。
手機版




