Cucumber planting to guard against fertilizer damage

(1) the upper margin neat form "gilded", necrotic tissue is generally not, Zhou Ranbian upper leaves small portion of the blade was "parachute" growing point tightening, multi due to excessive fertilization, soil solution is too large n Xiao And caused the accumulation of salt in the leaves.

( 2 ) Ammonia: When the roots are removed, the roots are rusted and the root tip is blunt; the leaf edges or veins of the leaves are still green, and then dry, and the boundary between the disease and the health is clear. Before the planting of the melon seedlings, the chicken manure that is not decomposed is applied, and the chicken manure discharges a large amount of ammonia gas in the closed greenhouse, which is most likely to cause ammonia damage.

( 3 ) When the main root is fertilized, the melon seedlings show the rotten edges of the core leaves. Prevention: Pay attention to the application of decomposed chicken manure, do not apply too much fertilizer, and do not get too close to the roots.

 

 

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