Impact On Soil Moisture And Nutrient As Well As Winter Wheat Yield With Moisture Conservational Tillage In Channel Irrigate Area

It was down by field experiment that impact on cultivations of moisture conservational irrigation on winter wheat under five different treatments at channel irrigation area in 2004-2005, Yangling town, Wuquan county. The result shows:1. The influence of different treatments on soil moisture and water use efficiency Water storage content of other treatments accumulated moisture average beyond CT about 21.14mm. The average water use efficiency of the cultivations of moisture conservational tillage treatments for winter wheat was 18.22% higher than traditional cultivation ways.2. The influence of different treatments on soil nutrient contentCompared with the traditional tillage, the average soil available potassium, available phosphorus and organic matter content increased with significance level in 0-20cm by moisture conservational tillage, on the contrary, in 20-40cm, showed no significant advantages and the total nitrogen content have the same effect in 0-40cm.3. The physiological characteristics of winter wheat at grain filling stageThe moisture conservational tillage can optimize the winter wheat's physiological characteristics; improve crop metabolize of moisture; delay the decrease of chlorophyll content in the flag leaves. The MDA content decreased and the SOD content increased tend to significance level.4. The impact on crop growth of winter wheatDifferent moisture conservational tillage raised winter wheat emergence notably while the traditional tillage got the poorest emergence. Compared with CT, the spikes per mud and the amounts of colony increased with significant difference at mature stage. But there shows lower total dry matter accumulation content.5. The economic output and yield of winter wheatThe moisture conservational tillage would be cultivation technical to stable yield and high yield in irrigation area. The spike numbers increased 11.42% and 1000-grain weight...