Four taboos in the use of chemical fertilizers
1, avoid using alone The ideal method of application is to apply organic fertilizers (such as human and animal manure, straw, animal residues, slaughterhouse waste, compost, manure, and manure) first, and then use other fertilizers such as urea, superphosphate, and potassium chloride. use. 2, avoid mixing with ammonium bicarbonate After urea is applied to the soil, it must be converted into ammonia to be absorbed by the crop. The conversion rate is much slower under alkaline conditions than under acidic conditions. After ammonium bicarbonate was applied to the soil, the reaction was alkaline and the pH was 8.2-8.4. The combination of ammonium bicarbonate and urea will greatly slow down the conversion of urea to ammonia, which can easily lead to the loss of pyrolysin and loss of volatiles. Therefore, urea and ammonium bicarbonate should not be mixed or applied simultaneously. 3, bogey spread on the surface Urea is applied to the surface of the earth and it takes only 4 to 5 days for transformation to be absorbed by crops at room temperature. Most of the nitrogen is volatilized during the ammonium process. The utilization rate is only about 30%. If the alkaline soil and organic matter content are high, The application of soil will cause more nitrogen loss. Therefore, nitrogen cannot be applied on the surface. 4, immediately after the application of urea irrigation Urea is an amine nitrogen fertilizer that must be converted to ammonia nitrogen before it can be absorbed and utilized by crops. In the conversion process, due to different conditions such as soil quality, moisture, and temperature, the time will vary. Usually it takes 2 to 10 days to complete. If urea is applied immediately after irrigation or dry land is applied before heavy rain, urea will be lost immediately. Used for impotence due to kidney deficiency, premature ejaculation due to spermatorrhea, flaccidity of waist and knee, cold and cold limbs. For the treatment of impotence and catharsis, it can be used with fairy grass, cornel meat, Cistanche deserticola and other products; for the treatment of lumbar and knee impotence, it can be used with Eucommia ulmoides, Morinda officinalis, Dogji and other products. Epimedium Extract,Epimedium Sagittatum,Epimedium Grandiflorum,Epimedium Sagittatum Seeds Lixian Spring Pharmaceutical Co., Ltd. , https://www.lxctyy.com