论文部分内容阅读
采用田间试验方法研究腐脲在水稻上的增产效果及最佳施肥时期。结果表明,在等氮量条件下,腐脲比尿素平均增产39 4kg/亩,增产6 7%,达显著水平、施用时期以作基肥较佳、腐脲增产效果因土质和土壤有机质含量不同而异,一般在保水保肥能力差、土壤有机质含量较低的土壤,施用效果较好。
Field experiment was used to study the effect of urea on yield increase and the optimal fertilization period on rice. The results showed that under the condition of isobaric nitrogen, the average yield of urea increased 39 4 kg / mu and the yield increased 67% to a significant level, while the application period was better for basal fertilizer. The effect of increasing urea production was due to the difference of soil organic matter content Different, generally poor water retention and fertilizer, soil organic matter content of the lower soil, the application effect is better.