2. Suit the remedy to the case: because of molybdenum is one of the main elements of nitrate reductase, and nitrate reductase is carbon, hydrogen, oxygen, nitrogen, phosphorus, sulfur and molybdenum elements 7 kinds of protein, its main function is in the heart of the leaf of nitrate nitrogen absorbed by the roots into nitrite nitrogen, via nitrite reductase into ammonia nitrogen, in order to participate in the synthesis of chlorophyll, without its transformation effect, absorption of nitrogen in the soil cannot be directly used in the synthesis of chlorophyll. So in these seven elements that make up the nitrate reductase, the absence of any one element, the enzyme cannot be formed. The nitrogen in the soil is no longer useful.

3. Prevention and treatment: after the new leaf was expanded, the solution was used in a timely manner with the new high lipid membrane, which was used to increase the efficiency of the effective component utilization. Adding organic fertilizer, because of organic fertilizer abundant element and trace element content is more comprehensive. Late early winter more organic fertilizer combined with electronic plant fat, improve cell division, molecular synthesis and nutrition matching digest level, frequency, speed up metabolism activation plant nutrition guidance system to produce fertilizer effect.