秋蘿卜上市前,常會發生裂根、糠心和畸形,實在讓人鬧心,這不但影響商品性,而且有些還失去了食用價值。其實隻要找準病根,還是可以提前防治的。
裂lie根gen。主zhu要yao是shi在zai生sheng長chang過guo程cheng中zhong,土tu壤rang中zhong的de水shui分fen供gong應ying不bu平ping衡heng所suo致zhi。在zai生sheng長chang初chu期qi,如ru果guo遇yu到dao高gao溫wen供gong水shui不bu足zu,肉rou質zhi根gen周zhou皮pi層ceng組zu織zhi便bian會hui硬ying化hua。到dao生sheng長chang中zhong後hou期qi溫wen度du適shi宜yi,水shui分fen充chong足zu時shi,木mu質zhi部bu薄bo壁bi細xi胞bao再zai次ci膨peng大da,周zhou皮pi層ceng及ji韌ren部bu細xi胞bao不bu能neng相xiang應ying生sheng長chang,便bian會hui發fa生sheng開kai裂lie。預yu防fang方fang法fa是shi在zai生sheng長chang初chu期qi幹gan旱han立li即ji灌guan水shui,待dai中zhong後hou期qi肉rou質zhi根gen膨peng大da時shi,均jun勻yun供gong水shui,以yi防fang止zhi根gen部bu開kai裂lie。
糠kang心xin。在zai肉rou質zhi根gen部bu的de生sheng長chang後hou期qi,由you於yu肉rou質zhi根gen迅xun速su膨peng大da,木mu質zhi部bu的de一yi些xie遠yuan離li輸shu導dao組zu織zhi的de薄bo壁bi細xi胞bao缺que少shao營ying養yang供gong應ying,使shi細xi胞bao中zhong糖tang分fen消xiao失shi,可ke溶rong性xing物wu含han量liang減jian少shao,同tong時shi還hai會hui產chan生sheng細xi胞bao間jian隙xi,最zui後hou造zao成cheng糠kang心xin。預yu防fang方fang法fa除chu選xuan擇ze優you良liang品pin種zhong栽zai培pei外wai,還hai要yao在zai調tiao節jie水shui、肥上多下功夫。
畸ji形xing。在zai蘿luo卜bu生sheng長chang過guo程cheng中zhong,如ru果guo土tu壤rang耕geng層ceng太tai淺qian或huo石shi礫li塊kuai阻zu礙ai肉rou質zhi根gen生sheng長chang,側ce根gen就jiu會hui迅xun速su膨peng大da,而er造zao成cheng蘿luo卜bu畸ji形xing。預yu防fang方fang法fa是shi深shen鬆song翻fan,加jia深shen耕geng層ceng,打da破po犁li底di層ceng,創chuang造zao適shi合he蘿luo卜bu生sheng長chang的de土tu壤rang環huan境jing,尤you其qi是shi土tu質zhi不bu能neng硬ying化hua。
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