论文部分内容阅读
丘陵旱地无灌溉条件,完全依靠天然降水,小麦产量受旱、薄因素限制长期低而不稳。在充分利用天然降水条件下,如何培肥地力是夺取小麦高产的重要问题。当前培肥地力单靠原有的有机肥源很难以维持与扩大养分循环,必须投入适当的化肥以便提高产量和增加还田的植物有机质,以提高土壤肥力。但化肥施用不当也会引起作物贪青、倒伏、氮磷失调,从而降低产量,减少收益。为探讨旱地小麦施用氮磷化肥的肥效及其配比的经济效益,于1982—1983年在伊川县白沙公社范村大队科研站进行小麦氮磷化肥配比及最佳经济施用量的试验。
Hilly drylands without irrigation conditions, relying entirely on natural precipitation, wheat yield drought, thin and long-term low and unstable factors. Under the condition of making full use of natural precipitation, how to cultivate soil fertility is an important issue to seize the high yield of wheat. At present, it is difficult for the existing fertilizers to maintain and expand the nutrient cycle based on the original organic fertilizer sources. Fertilizers must be put into proper use so as to increase the yield and increase the organic matter of the returned plant so as to improve soil fertility. However, improper application of fertilizers can also cause crops to greed green, lodging, nitrogen and phosphorus disorders, thereby reducing production and reducing returns. In order to discuss the fertilizer efficiency of nitrogen and phosphorus fertilizers and the economic benefits of its ratio in dryland wheat, the ratio of nitrogen and phosphorus of wheat and the optimum economic application were tested in the research station of Fancun Boli of Baisha commune in Yichuan County from 1982 to 1983.