【正文】 AP production in China is given。 Experience on the project of DAP production by reanizing TSP plant LI Jianming, ZHANG Hongying (AP Workshop of Wengfu Phosphate Fertilizer Plant, Fuquan, Guizhou 550501, China) Key words: triple superphosphate (TSP)。 slow release fertilizer。 consumption of phosphate fertilizer and sulfuric acid in China, 2020 WU Xuemei (China Sulfuric Acid Industry Association, Beijing 100011, China) Key words: China。 meanwhile important achievements and existing problems are listed. Finally the prospects for development are presented. 我國(guó)化肥市場(chǎng)觀潮 周 潔，白 杉 (76140部隊(duì)，廣西 桂林 541001) ［關(guān)鍵詞］ 化肥市場(chǎng)；不景氣；世貿(mào)沖擊；結(jié)構(gòu)調(diào)整 ［摘 要］ 化肥的增長(zhǎng)有其自身的特點(diǎn)。Phosphate amp。受多種因素影響，目前我國(guó)化肥工業(yè)并不景氣，世貿(mào)的沖擊又使該行業(yè)雪上加霜。 phosphate fertilizer。 technology。 reanizing plant。 also a parison is made. The development of Venturitype quick reactor and its characteristics are described. 小型磷酸生產(chǎn)的環(huán)保問(wèn)題及解決方案探討 魏文彥 (成都西星化工有限公司，四川 成都 610072) ［關(guān)鍵詞］ 小型磷酸；生產(chǎn)；環(huán)保問(wèn)題；解決方案 ［摘 要］ 從我國(guó)小型磷酸生產(chǎn)的現(xiàn)狀出發(fā)，列舉出這些裝置的廢氣、廢水和廢渣對(duì)環(huán)境的影響和危害，并介紹解決這些問(wèn)題的可靠方法。 concentration。 The effect of PA amp。目前還沒(méi)有除去液相中氟的成熟方法，該公司是采取精料政策及一些工藝措施使生產(chǎn)基本能正常運(yùn)行。 mixing process。 sprayer Abstract: Beginning at the characteristic analysis of swirl fluid in Venturi scrubber with internal injection, some concerned mathematical models and expressions are established. Then the design methods for the sprayer, inner diameter of shrinking pipe branch, spout and choke are presented. Some design items in theory and practice are discussed. 干燥塔的技術(shù)改造 趙 霞 (番禺鳳山實(shí)業(yè)總公司，廣東 廣州 511483) 【復(fù) 混 肥】 30 kt/a 復(fù)混肥生產(chǎn)線的運(yùn)行經(jīng)驗(yàn) 熊惠文 （安徽華星化工股份有限公司，安徽 和縣 238251) ［關(guān)鍵詞］ 復(fù)混肥；運(yùn)行；經(jīng)驗(yàn) ［摘 要］ 根據(jù) 30 kt/a復(fù)混肥生產(chǎn)線運(yùn)行中存在的問(wèn)題及其處理所取得的經(jīng)驗(yàn)，討論在復(fù)混肥設(shè)計(jì)中，設(shè)備的平面布置、設(shè)備 (如固體輸送機(jī)、鏈磨機(jī)、烘干機(jī)等 )選用時(shí)應(yīng)注意的問(wèn)題。 application Abstract: Through experiment, a modified formula is given of 66 kg SSP raw material with poor physicochemical property in per ton finishing product of highanalysis pound fertilizer, which results in decreasing 21 RMB Yuan raw material cost and 6 RMB Yuan energy consumption. So, annual economic benefit of million RMB Yuan will be brought for pound fertilizer plant with 50kt/a capacity. 低溫下熔融原料生產(chǎn)復(fù)合肥 Phosphate amp。 single superphosphate (SSP)。 spaying granulation。 inanic fluoride pound。 spectrophotometry Abstract: The condition of color reaction between Al3+and DBACPF, and their photometric property are confirmed under cationic surfactant CTMAB. In HAcNaAc buffer medium with pH , a red pound with n(Al3+)/n(DBACPF) 1∶ 2 was prepared for determination of Al2O3 in phosphate rock, whose maximum absorption peak is 560 nm and apparent absorbance index is 105 L/(mol ground phosphate rock。 The potassium contents in Gansu corridor irrigated desert soil and its fertilization effect of current season SUO Dongrang1, LI Duozhong2 (1. Zhangye Agriculture Institute, Zhangye, Gansu 734000, China； Soil and Fertilizer Station, Zhangye, Gansu 734000, China) Key words: Gansu corridor。 presentation Abstract: A technical visit to Onoda Plant of Onoda Chemical Industry Co., Ltd. and Himeji Plant of Chikkarin Industry Co.,Ltd. in Japan was paid. Some information on feed grade defluorinatedcalcium phosphate, multiphosphate fertilizer and anic fertilizer in the two factories is presented. 【技術(shù)講座】 如何撰寫(xiě)肥料發(fā)明專利申請(qǐng)文件 第八講 用廢物、廢料制造肥料申請(qǐng)文件的撰寫(xiě) Phosphate amp。 How to write the patent application documents of fertilizer invention — Lesson 8 How to write a patent application document of fertilizer produced from waste and scrap XIANG Hua (Intellectual Property Office of China, Beijing 100088, China) Key words: fertilizer。 K change； K effect Abstract: Investigation shows that the total K and available K in Gansu corridor area have decreased by 22% and % respectively, pared with that of late K, slow release K and water soluble K in plough layers are 14 200 mg/kg, 1 034 mg/kg and 142 mg/kg respectively. No K effect occurs on panion crops, wheat, maize, beet and potato39。 rapeseed。s Law. 復(fù)混肥中總氮含量測(cè)定方法的探討 全自禮 (駐昆解放軍化肥廠，云南 開(kāi)遠(yuǎn) 661600) 微波加熱技術(shù)用于磷鉬酸喹啉重量法測(cè)定磷酸一銨中 P2O5含量 陶文大 (宣城市森泰化工 有限責(zé)任公司，安徽 宣城 242020) 【農(nóng)化服務(wù)】 酸性水稻土施用磷礦粉的農(nóng)學(xué)有效性和經(jīng)濟(jì)效應(yīng)的評(píng)價(jià) 吳崇書(shū) 1，孟賜福 2，呂曉男 2，滕淳茜 1，趙森榮 3 (，浙江 淳安 311700； 土壤肥料研究所，浙江 杭州 310021； ，浙江 蘭溪 321109) ［關(guān)鍵詞］ 水稻土；磷礦粉；水稻；油菜；產(chǎn)量；經(jīng)濟(jì)效應(yīng) ［摘 要］ 4個(gè)酸性水稻土施用不同磷源的試驗(yàn)結(jié)果顯示： (1)水稻土施用磷肥的增產(chǎn)效應(yīng)，油菜比水稻大得多：發(fā)育第四紀(jì)紅色黏土紅壤稻 田 (有效磷含量 mg/kg)施用磷肥增加油菜籽 ～ 倍，而發(fā)育于河流沖積物和紅砂巖的水稻土 (有效磷含量 mg/kg)施用磷肥增加油菜籽 ～ ；發(fā)育第四紀(jì)紅色黏土和花崗巖的紅壤稻田施用磷肥增加稻谷產(chǎn)量分別為 %～ %和 %～ %； (2)紅壤水稻土施用 Gafsa磷礦粉農(nóng)學(xué)相對(duì)有效性 (%～ %)與過(guò)磷酸鈣相近，而大大高于昆陽(yáng)磷礦粉 (%～ %)； (3)油菜施用磷肥增加的產(chǎn)值 (～ 元 /hm2)顯著高于水稻施用磷肥增 加的產(chǎn)值 (224～ 742 元 /hm2)； (4)油菜和水稻施用磷肥的產(chǎn)投比昆陽(yáng)磷礦粉＞ Gafsa磷礦粉＞過(guò)磷酸鈣； (5)在施磷礦粉的基礎(chǔ)上，施用硫肥可使油菜籽產(chǎn)量提高 %～ %，