论文部分内容阅读
1.番茄空洞果主要原因是受粉不良,即花粉形成时遇高温、光照不足等条件,使花粉不饱满,不能正常受精。其次是氮肥用量过多,使开花前后及幼果期植株生长过旺引起的。第三,用2,4—D或番茄灵沾花时,浓度过高也容易形成空洞果。防治方法:开花时严格控制温度,氮肥不要过量,2,4—D或番茄灵沾花时,浓度要准确,方法要正确。2.番茄顶裂果主要是由于开花时花器养分不足。使花柱开裂造成的,在低温季节或大棚中定植过早时尤为严重。防治方法:避免过度施用钾肥、氨态氮肥,应补施一定的钙,大棚温室不宜定植过早。
1. Tomato cavity fruit is the main reason for bad powder by the formation of pollen when the case of high temperature, light and other conditions, the pollen is not full, can not be normal fertilization. Followed by excessive nitrogen fertilizer, so that before and after flowering and young fruit growth caused by over-growth. Third, with 2,4-D or tomato spirit dip flower, the high concentration is also easy to form hollow fruit. Control methods: flowering strictly control the temperature, nitrogen fertilizer should not be excessive, 2,4-D or tomato Ling Zhanhua, the concentration should be accurate, the method should be correct. 2. Tomato top cracking is mainly due to lack of nutrients when flowering flowers. The style caused by cracking, in the cold season or greenhouse planting is particularly serious. Prevention and treatment methods: to avoid excessive use of potash, ammonia nitrogen, should make up a certain amount of calcium, greenhouse greenhouse should not be planted too early.