Experts look for new ways to control nitrogen loss

Studying the changes of nitrate in plants and improving the utilization of nitrogen in plants is expected to become a breakthrough in controlling the loss of nitrogen fertilizer. This unique research topic has been included in the major projects of the National Natural Science Foundation of China. This is the information that has recently come out of the soil science community.
According to the latest survey results, the annual output of contaminated vegetables with nitrate and nitrite exceeding the standard has reached 600,000 tons. Therefore, it is of great significance to study the control and transformation of nitrate in plant vacuoles to produce green agricultural products and ensure the health of the public. In addition, the use of chemical fertilizers in China is relatively large, with an annual loss of about 9 million tons of chemical nitrogen, valued at about 35 billion yuan, causing both losses and environmental pollution. Therefore, it is of great significance to open up new ways to improve the utilization rate of nitrogen fertilizer.
According to experts, nitrates in plants are mainly distributed in vacuoles, and some plants have nitrate concentrations of up to 300 mol/m3 in some liquids. In the range of the external nitrate concentration of 0.l-10mol/m3, the concentration of nitrate in the plant cytoplasm is basically stable at several mol/m3, and the change range is small. Therefore, the change of nitrate content in plants mainly depends on the wave. The change in nitrate concentration in the pool. Since the reduction of nitrate occurs in the cytoplasmic towel, and the reduction of nitrite is carried out in the chloroplast towel, the outflow of nitrate from the vacuole to the cytoplasm and the inflow from the cytoplasm to the bubble are largely determined by the plant to nitrate. use. Mastering how the nitrate rotation system on the vacuolar membrane works, it is also expected to control the nitrate content in plants, thereby improving the utilization efficiency of nitrogen. Based on this thinking, the distribution and utilization of nitrate in plants as a breakthrough has become a new research field to control the loss of nitrogen fertilizer. It is understood that the first plant electrophysiological laboratory to study the relationship between plant cell plasma membrane potential and bubble membrane potential and nitrate trans-supply transport has been established.
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