论文部分内容阅读
一、硼肥缺硼症主要表现为核桃枝梢回枯,小叶叶脉出现棕色小点,小叶易变形,幼果易脱落。防治方法为,于冬季结冻前,土壤施用硼砂,每667平方米施用量为2～2.5千克,施后立即灌水,或喷布0.1%～0.2%的硼酸溶液。应注意的是,硼过量也会出现中毒现象,其树体表现与缺硼相似,因此,生产中要注意区分。
First, boron deficiency boron disease is mainly manifested as dry back to walnut shoots, lobular leaflets appear brown dots, leaflets easily deformed, young fruit easy to fall off. Prevention and treatment methods, in the winter before freezing, soil application of borax, 667 square meters for the application of 2 to 2.5 kg, immediately after application of irrigation, or spraying 0.1% to 0.2% boric acid solution. It should be noted that excessive boron will appear poisoning phenomenon, the performance of its body and lack of boron similar to the production should pay attention to the distinction.