Autumn vegetables, especially autumn-delayed vegetables, are prone to calcium deficiency. Should pay attention to calcium, not more containing chlorinated fertilizer. The general symptoms of calcium deficiency in vegetables are neonatal sites such as terminal buds and root hairs, fertility arrest, atrophy and death, new leaf adhesions, new leaves that are often coked, and incomplete; incomplete depression of the fruit, dark brown and necrotic. The cause of calcium deficiency is generally calcium deficiency in the soil itself, high soil salt content, inhibition of root absorption of water and nutrients, soil drought, increased soil solution concentration, reduced water absorption in the roots, thus inhibiting calcium absorption; excessive application of ammonium nitrogen Inhibition of calcium absorption, the incidence of dry heart disease of Chinese cabbage increased with the increase of nitrogen fertilizer. To prevent calcium deficiency in autumn vegetables, the amount of fertilizer should be controlled. It is not appropriate to use too much fertilizer at one time, especially chlorinated fertilizers such as ammonium chloride and potassium chloride; timely irrigation to prevent soil drought, while spraying 0.3-0.5% calcium nitrate on the leaves, 7 days, spray 2-3 times. Tomato should be sprayed on the 2-3 leaves above and below the inflorescence when flowering. Chinese cabbage can be sprayed when it enters the ball stage.
To cause a temporary loss of sensation with medicine or acupuncture.
Figurative use of some means to make people vague, depressed
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