When the greenhouse vegetables appear continuous and hot weather in winter and spring, the physiological obstacles of ammonia poisoning often occur. The leaves of the lighter are indefinitely shaped and the leaves are burnt. The roots of the heavy plants changed from brown to black, losing the function of absorbing fertilizer and water, and the aboveground part gradually withered and died. There are three rescue measures for ammonia poisoning prevention and poisoning:
First, the safe fertilization shed planted vegetable fertilizer or top dressing, should pay attention to the following points: First, the application of organic fertilizer as a base fertilizer, must be fully decomposed; Second, chemical fertilizers and organic fertilizer can only be applied deep, can not be applied on the ground; It is not enough to apply fertilizer, especially the top dressing should be applied in small quantities for many times; the fourth is to apply fertilizer, or to apply water after application, so that the fertilizer can be decomposed and released in time.
Second, the discharge of ammonia gas pH test paper is used to determine the pH concentration of the water droplets in the shed, and when the pH value is above 8.2, the air is vented in time.
Third, in time to rescue the symptoms of ammonia poisoning in vegetables in the shed, it is necessary to take timely measures to rescue: in addition to venting and exhausting, one is rapid irrigation, reducing the concentration of soil fertilizer solution; the second is to spray the active liquid fertilizer such as Shifeng Manfeng, balance the plants The pH of the body and soil; the third is to spray 1% vinegar on the back of the plant leaves to reduce or alleviate the hazard.
First, the safe fertilization shed planted vegetable fertilizer or top dressing, should pay attention to the following points: First, the application of organic fertilizer as a base fertilizer, must be fully decomposed; Second, chemical fertilizers and organic fertilizer can only be applied deep, can not be applied on the ground; It is not enough to apply fertilizer, especially the top dressing should be applied in small quantities for many times; the fourth is to apply fertilizer, or to apply water after application, so that the fertilizer can be decomposed and released in time.
Second, the discharge of ammonia gas pH test paper is used to determine the pH concentration of the water droplets in the shed, and when the pH value is above 8.2, the air is vented in time.
Third, in time to rescue the symptoms of ammonia poisoning in vegetables in the shed, it is necessary to take timely measures to rescue: in addition to venting and exhausting, one is rapid irrigation, reducing the concentration of soil fertilizer solution; the second is to spray the active liquid fertilizer such as Shifeng Manfeng, balance the plants The pH of the body and soil; the third is to spray 1% vinegar on the back of the plant leaves to reduce or alleviate the hazard.
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】
Jinfa Copper And Aluminum Company Limited , http://www.gdaluminumcoil.com