Ammonium chloride is a good fertilizer for paddy fields

Ammonium chloride, also known as ammonium chloride, is a by-product of the production of soda ash (sodium carbonate). Its nitrogen content is 23% to 25%. It has been used as a base fertilizer and top dressing for rice for many years, and it is more effective than other nitrogen fertilizers for applying nitrogen. Well, 15.6 kg and 23.9 kg of paddy rice were increased compared with ammonium bicarbonate and ammonium sulfate. Ammonium chloride applied to rice has some special effects in addition to the functions of other nitrogen fertilizers.

Ammonium chloride is used in paddy fields and has a stable and long-lasting fertilizer effect with less loss. Ammonium chloride ammonium ions can be easily absorbed by the soil, chloride ions can inhibit the activity of nitrifying bacteria, so that the nitrification and denitrification denitrification is difficult to carry out, so that more ammonium ions can be stored in rice fields. According to the experiment, after applying ammonium chloride, ammonium sulfate, and urea fertilizers simultaneously to the paddy field for 14 days, the **-level nitrogen in the soil was determined to be 1 ppm, 9 ppm, and 14 ppm, respectively. After 28 days, the **-level nitrogen was determined as 78ppm, 112ppm, and 196ppm. This shows that the application of ammonium chloride than ammonium sulfate, urea nitration is greatly weakened, because ** nitrogen can not be stored by the soil complex adsorption, easy to loss with water.

Under the condition of equal amount of nitrogen, ammonium chloride fertilizer efficiency is equivalent to urea and faster than urea. According to tests conducted by the Ministry of Agriculture and Technology, according to the same amount of nitrogen application, for every additional tiller of rice, ammonium chloride only needs 4.6 days, while urea needs 6.9 days; According to statistics of rice plant height and effective panicles at 8 points: Apply ammonium chloride The plant height is 84.1 cm and the effective ear is 233,800, while the application of urea is only 83.3 cm and 222.6 thousand respectively. Ammonium chloride is more effective than ammonium bicarbonate and ammonium sulfate. It is still not common to apply ammonium chloride in paddy fields in the southern rice region. Some people worry that after ammonium chloride is used, the chloride ions will acidify and compact the soil. In fact, chloride ions are negatively charged and not adsorbed by soil colloids. In addition, during the growth of rice in the southern rice region, there is more rainwater, and paddy fields often run water. Chlorine ions are lost with water and do not cause accumulation and side effects. According to tests, continuous application of ammonium chloride for 10 years in paddy fields and final analysis of the soil did not bring about adverse effects.

Rice is a hi ammonium crop. When ammonium chloride is applied to paddy fields, the carbohydrates in the rice body are immediately absorbed and assimilated into organic nitrogen compounds such as amido acid, amino acids, etc. It can regulate the nitrogen content in rice plants to be not too high, and can reduce ineffective delivery and late greediness. Actress has the effect of promoting large panicles, increasing solid grains, and increasing grain weight. According to the results of many years of experiments conducted by the Chinese Academy of Agricultural Sciences in the red soil experimental station in Liyang County, Hunan Province, the use of ammonium chloride and other nitrogenous fertilizers containing chloride ions was 1 to 20% higher than that of the nitrogen fertilizers containing sulfate and roots.

Ammonium chloride is slower than urea and ammonium sulphate, making nitrogen more in the form of ammonium nitrogen (NH4-N) adsorbed and stored by paddy soil colloids, resulting in less loss of nitrogen than urea and increasing nitrogen fertilizers. Utilization rate. In addition, chlorine can increase soil acidity, and is conducive to the activation of phosphorus, zinc and other nutrients for absorption and utilization of rice to prevent the emergence of rice seedlings caused by phosphorus and zinc deficiency. Ammonium chloride is stable under normal conditions, and its volatility and decomposability are lower than those of ammonium and ammonium carbonate. Transportation, storage, and application are also more convenient and safer than ammonium bicarbonate.

Application method. Ammonium chloride can be used as basal fertilizer and top dressing, and the application amount per mu is generally 10 to 15 kg. However, it should be noted that do not make fertilizer and fertilization in paddy field, so as not to affect the germination of seeds and cause burning phenomenon; some "bogey" chlorine crops such as sugar cane, **, potatoes, grapes, citrus, etc. should not be used, so as not to reduce product quality.