What is the effect of long-acting urea? How do I use it?

What is the effect of long-acting urea? How do I use it? Please introduce the long-acting urea, which is made by adding a certain amount of urease inhibitor (hydroquinone) to the ordinary urea during the process. The average yield of one-time deep application of long-acting urea was 14.6% higher than that of ordinary urea (seed fertilizer + topdressing), and the range of increase was 8.6% and 25.1%, while that of corn bottom deep application of long-acting urea was 16.6% and 11.4%, respectively. 21.7%. Why is the yield of long-acting urea so significantly higher than that of ordinary urea? Because long-acting urea contains hydroquinone, it has an inhibitory effect on the decomposition of nitrogen in urea, which has a great inhibitory effect in the early stage of maize growth, and the inhibitory effect is gradually weakened with the gradual consumption of hydroquinone. Urea decomposition returned to normal after 70 days of application. At this time, the fertilizer requirement of maize increased after jointing, which met the demand for nitrogen, and basically realized the synchronization of crop fertilizer demand and long-term urea nitrogen release. In this way, maize needs less nitrogen fertilizer from emergence to jointing, but the loss caused by normal decomposition of nitrogen caused by ordinary urea can not be used, and the fertilizer effect can be exerted normally in the later stage, which can prolong the fertilizer efficiency period, meet the needs of corn, and then improve the nitrogen use efficiency. From the point of view of the growth trend of maize applying long-acting urea in production, the plant applying common urea in the early stage was slightly lower than that of ordinary urea. But there is a significant difference in the later stage. According to the multi-site investigation at the mature stage, the plant height was 24.9cm lower and the stem diameter increased by 0.29cm than that of ordinary urea, and the most obvious was that the green leaf area in the mature stage was more than 1.9cm, with an area of 362.7 square centimeters. It is especially outstanding on sandy soil. The reason is that the fertility of sandy soil is poor, the leakage is serious, and the application of long-acting urea nitrogen is released slowly, which reduces the loss and improves the utilization rate. The plant with long-acting urea had large leaf area and increased photosynthetic area, which was beneficial to the production and accumulation of nutrients, which laid the foundation for increasing yield. The ear length is 1.3 cm longer than that of common urea, and the 100-grain weight is increased by 1.5 g. The practice has proved that the long-acting urea has the characteristics of labor saving, increasing production and high benefit due to the deep application at the bottom, so it is welcomed by the majority of farmers and should be popularized and applied in maize production. Three points should be paid attention to in popularization and application: ① long-acting urea can be applied in corn fields of brown loam, meadow soil, aeolian sandy soil and other kinds of soil, but attention should be paid to the content of hydroquinone, high content should be selected for the plots with sticky texture and good fertility, otherwise, the specification products with low content should be selected. When applying long-acting urea, ② must pay attention to the isolation layer of seed and fertilizer, implement deep application at the bottom, and keep a distance of more than 5 cm from the seed, so as to prevent seed burning from affecting the whole seedling. The amount of ③ long-acting urea must be applied according to the measurement, and the amount of fertilizer should be sufficient, generally 30 kg per mu, in case de-fertilization can not achieve high yield and high efficiency. Click to get more nitrogen, phosphorus, potassium application techniques click to get more chemical fertilizer application techniques