Why kidney beans are deformed

One is the use of kidney bean sensitive drugs: kidney beans are sensitive to mancozeb, mancozeb or acetamivir, such as excessive application is easy to bend pods. Kidney beans are very sensitive to poisonous alum and are prone to drug damage, resulting in pod deformities. There are also kidney beans due to spraying copper preparation or anthrax Fumei drug damage, light pods bent, heavy leaves and pods. Second, lack of boron: kidney beans lack boron is not easy to sit pods, even if sitting, but also spend long pods, pods bent, poor merchandise. The solution is to spray 1200 times of Suele boron solution before blooming. Third, the temperature is too high or too low: the suitable temperature for kidney bean growth is 23 ℃ ~ 25 ℃ in the daytime and 18 ℃ at night. The pod setting of kidney bean will be affected if the daytime temperature is lower than 20 ℃ or higher than 30 ℃. When flowering at noon, you must observe the temperature in the shed and regulate the temperature in the shed. Fourth, the soil is too dry or too wet: the greenhouse soil is too dry or too much water is easy to cause just sitting pods appear hook. This is because the soil is too dry or too wet to damage the root system, resulting in plant weakness, affecting flowering and pod setting. Watering should be determined according to soil moisture and should not be flooded to avoid root damage. Fifth, excessive use of growth inhibitors: vegetable farmers spray excessive inhibitors on kidney beans with restless pods, such as dwarf, difenoconazole, etc., which are easy to cause kidney beans to bend. When some vegetable farmers spray naphthalene acetic acid to prevent pods from falling, the pods are bent due to excessive concentration. Spray growth inhibitors must be prepared and used in accordance with the instructions and should not be excessive. Sixth, the concentration of soil solution is too high: excessive application of chemical fertilizer or saline-alkali soil will cause pod deformity, so we should apply less chemical fertilizer and more humic acid fertilizer. When the pod grows to 3-4 cm long, 15-30 kg humic acid fertilizer can be applied per mu to supplement nutrition. Excessive application of chemical fertilizer should not increase the concentration of soil solution and cause the pod to bend. Soilless cultivation is the best way to grow kidney bean in saline-alkali soil, so as to avoid direct contact between kidney bean root system and saline-alkali soil and affect root growth.