氮素是小麦生产过程中的重要元素之一,氮肥的施用对小麦产量的影响很大。为明确一种新型肥料——长效尿素在小麦生产中作追肥的肥效,特进行本项试验。1.试验设计与实施试验地为两合土质,有水浇条件,地力均匀,小麦越冬群体一致。试验采用小区随机排列,设有长效尿素、普通尿素常量等量施用和长效尿素节肥20%三个处理,三次重复。小区面积40m~2,普通尿素和长效尿素等量,亩用量7.5公斤, Nitrogen is one of the most important elements in the wheat production process. The application of nitrogen fertilizer has a great influence on the yield of wheat. To clarify a new type of fertilizer - long-acting urea in the top-dressing of wheat for fertilizer efficiency, especially for this test. 1. Experimental design and implementation of test ground for the two co-soil, with water conditions, uniform soil, wheat overwintering population consistent. The experiments were randomly arranged in a plot with long-term urea, regular urea application of the same amount and 20% of long-term urea and fertilizer three treatments, three times repeated. Community area 40m ~ 2, the same amount of ordinary urea and long-lasting urea, the amount of acres of 7.5 kg,