Effects of Urea Ammonium Chloride of Different Fertilization Patterns on Maize Yield and Yield Components

[Objective] To understand the application effects of urea ammonium chloride fertilizer on maize production. [Methods] A field plot experiment was conducted to study the effects of urea ammonium chloride of different fertilization patterns on summer maize yield and yield components. [Results] Urea ammonium chloride had a long fertilizer effect and the same yield-increasing effect with urea, which could im- prove the agronomic traits and economic traits of maize apparently and the applica- tion of urea ammonium chloride with nutrient reduction of 40% （namely just use urea ammonium chloride equaled 60% pure nitrogen）, had the same yield-increasing effect with urea of traditional fertilization patterns, and input-output ratio was high and the economic benefit was remarkable. [Conclusion] To provide scientific theoretical direc- tion for large area popularization and application of urea ammonium chloride.

甜瓜地膜覆盖栽培

甜瓜地膜覆盖栽培一、选地施基肥甜瓜的前茬要选好，以小麦，玉米。甘薯为宜，忌用豆茬、瓜茬作甜瓜的前茬。甜瓜喜欢通气良好的砂壤土，适宜的ＰＨ值为６～６．８．基肥的施用要以有机肥为主，通常每０．１公顷施腐熟厩肥４～５立方米，饼肥８０公斤，二铵２０公斤，过磷...

新型高吸水树脂聚丙烯酸盐的合成

高吸水树脂是一种功能分子材料，它具有独特性能，能吸收自身数百倍甚至上千倍的水，不溶于水，也难溶于有机溶剂，吸水速率快，保水性能好，即使加压也难把水分离出来。因此高吸水树脂在石油、化工、医药卫生和农业部门有广泛的用途。交联的丙烯酸盐被认为是最有希望的吸水性树脂，目前用于医药卫生用品的大部分均为丙烯酸类高吸水聚合物。其原料来自工业丙烯酸，生产成本较低廉，工艺较简单，产品质量稳定，长时间储存不会变质。