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磷酸二氢钾到底能不能冲施?深度解析磷酸二氢钾使用方法
来源:http://www.jnjrh.com 日期:2019-12-04 发布人:admin
  有用户询问我们,磷酸二氢钾能不能冲施,我问他何来这个说法?这个用户说他看过很多文章,发现很多文章都是介绍磷酸二氢钾的水溶液呈酸性,他产生了疑问,很想知道长期使用磷酸二氢钾会不会造成土壤酸化,特向我们咨询此事。
氨基磺酸
  Some users asked us if potassium dihydrogen phosphate could be applied. I asked him why he came up with this statement? This user said that he had read many articles and found that many articles were about the acidity of the aqueous solution of potassium dihydrogen phosphate. He had doubts about whether the long-term use of potassium dihydrogen phosphate would cause soil acidification. He asked us about this.
  今天给大家解析一下,优质磷酸二氢钾溶于水之后,水溶液确实显酸性,1%浓度的水溶液,pH值约为4.6,但是磷酸二氢钾溶于水之后初步电离成阴离子-磷酸二氢根离子和阳离子-钾离子,这两种离子都能被植物直接吸收利用的,阴阳离子吸收平衡,即使长期使用,也基本不会造成土壤酸化,请各位农友放心大胆使用。何况市面销售的优质大量元素水溶肥料,大多是以磷酸二氢钾作为核心原料的。
  Today, I'd like to explain that the solution of high-quality potassium dihydrogen phosphate in water is indeed acidic. The pH value of 1% aqueous solution is about 4.6. However, potassium dihydrogen phosphate in water is initially ionized into anion dihydrogen phosphate ion and cation potassium ion, both of which can be directly absorbed and utilized by plants. The absorption of anion and anion is balanced, even if it is used for a long time Basically, it will not cause soil acidification. Please rest assured and use it boldly. Besides, most of the high-quality water-soluble fertilizers sold on the market are made of potassium dihydrogen phosphate.
  深度解析磷酸二氢钾众多使用方法
  Many application methods of deep analysis potassium dihydrogen phosphate
  ★叶面喷施:浓度为0.1%~0.3%,即15~45g磷酸二氢钾兑水15kg,每亩每次喷施溶液量为30-50kg,间隔10~15天喷1次,喷施2~3次为宜。喷施时间为上午10点前或下午5点后或者阴天全天,喷后1小时内遇雨应补喷1次。禾谷类作物中后期喷施时,甚至可以用到0.5~1.0%高浓度,即75~150g兑水15kg。
  ★ foliar spraying: the concentration is 0.1% - 0.3%, i.e. 15-45g of potassium dihydrogen phosphate mixed with water 15kg, the amount of solution sprayed per mu is 30-50kg, once every 10-15 days, and 2-3 times is appropriate. The spraying time shall be before 10 a.m. or after 5 p.m. or all day in cloudy days. In case of rain within 1 hour after spraying, the spraying shall be conducted once again. When spraying cereal crops in the middle and later stages, the high concentration of 0.5-1.0% can even be used, that is, 75-150g mixed with 15kg water.
  ★冲施:每亩每次用量2~5kg,中后期可用到5~10kg,随水冲施即可。
  ★ flushing application: the amount of each mu is 2-5kg, and it can reach 5-10kg in the middle and later period, just flushing with water.
  ★灌根:以0.1~0.3%的浓度为宜,均匀灌在作物根部。
  ★ root irrigation: the concentration of 0.1-0.3% is appropriate, and it is evenly irrigated at the root of crops.
  ★滴灌:浓度为0.05%~0.3%,视作物生长情况适当调整,均匀滴施在作物根部周围。很多肥料本身就是无机盐。当浓度太高时会“烧伤”叶片或根系。通过灌溉系统喷肥或滴肥一定要控制浓度。更准确的办法就是测定喷施的肥液或滴头出口的肥液的电导率,通常范围在1.0~3.0ms/cm就是安全的。对于设施滴灌,由于存在土壤的缓冲作用,浓度可以稍高也没有坏处,比方每方水(1000kg)中加入1~3kg磷酸二氢钾都是安全的。
  ★ drip irrigation: the concentration is 0.05% ~ 0.3%, which shall be adjusted according to the growth of crops, and evenly applied around the roots of crops. Many fertilizers are inorganic salts in themselves. When the concentration is too high, "burn" the leaves or roots. The concentration must be controlled by spraying or dropping fertilizer through the irrigation system. The most accurate method is to measure the conductivity of the fertilizer solution sprayed or the fertilizer solution at the outlet of the dripper. Generally, it is safe to measure the conductivity in the range of 1.0-3.0ms/cm. For facility drip irrigation, due to the buffering effect of soil, the concentration can be slightly higher and there is no harm. For example, it is safe to add 1-3kg of potassium dihydrogen phosphate into each cubic meter of water (1000kg).
  ★浸种:浸种浓度一般为0.2%,即100g磷酸二氢钾兑水50kg,浸种18~24个小时,捞出晾干后播种,而浸种后的溶液还可以用做叶面喷施的肥料或者浇灌作物根部。
  ★ seed soaking: the soaking concentration is generally 0.2%, i.e. 100g of potassium dihydrogen phosphate mixed with 50kg of water, soaking for 18-24 hours, pulling out and airing for sowing, and the solution after soaking can also be used as fertilizer for foliar spraying or for watering the roots of crops.
  ★拌种:浓度可为1%,即100g磷酸二氢钾兑水10kg,泼洒在种子上拌匀,晾干后使用。
  ★ seed mixing: the concentration can be 1%, i.e. 100g potassium dihydrogen phosphate mixed with 10kg water, sprinkled on the seeds, mix well, and use after drying.
  或者用喷雾器或弥雾机均洒于种子上,稍晾即可播种,每公斤溶液可拌种10kg左右。
  Or sprinkle on the seeds with sprayers or mist sprayers, and sow them for a little air. Each kilogram of solution can be mixed with 10kg seeds.
  ★蘸根:在作物移栽前,用磷酸二氢钾0.4~0.5kg,与2~3kg干细土拌匀,加适量的水调成泥浆,在移栽时蘸根栽插。或者直接用0.5%磷酸二氢钾溶液沾根后移栽。
  ★ root dipping: before transplanting, mix 0.4-0.5kg of potassium dihydrogen phosphate with 2-3kg of dry and fine soil, add proper amount of water to make mud, and then dip the root for transplanting. Or directly dip the root with 0.5% potassium dihydrogen phosphate solution and transplant.
  ★基施:可代替其它磷钾肥作基肥,每亩用5kg磷酸二氢钾,与10kg细土或农家肥拌匀后使用。果树根据树龄大小,可以直接沟施磷酸二氢钾50~200g/株。
  ★ basic application: it can be used as the basic fertilizer instead of other phosphorus and potassium fertilizers. 5kg of potassium dihydrogen phosphate is used per mu, mixed with 10kg of fine soil or farmyard fertilizer. According to the age of fruit trees, 50-200g / plant of potassium dihydrogen phosphate can be directly furrowed.