引大灌区春小麦测土配方施肥指标研究

Study on Soil Testing and Formulated Fertilization Indices of Spring Wheat in the Yinda Irrigated Areas

采用"3414"完全实施试验方案和农业部《测土配方施肥数据汇总系统》3414试验分析模块,建立了引大灌区春小麦生产推荐施肥指标。即当土壤养分丰缺指标极低时(相对产量<50%),N、P2O5、K2O施用量分别高于166.80、184.10、130.20 kg/hm2;土壤养分丰缺指标低、较低、中等、较高时,N施用量分别为149.55～166.80、117.75～149.55、71.10～117.75、9.90～117.75 kg/hm2,P2O5施用量分别为173.90～184.10、145.50～173.90、99.20～145.50、34.80～99.20 kg/hm2,K2O施用量分别为129.50～130.20、122.00～129.20、107.40～122.00、86.00～122.00 kg/hm2;当土壤养分丰缺指标高时,N、P2O5、K2O施用量分别低于9.90 kg/hm2、34.80 kg/hm2和86.00 kg/hm2。

The abundance and deficiency indices of soil nutrient for spring wheat in the Yin Da irrigated area were established based on a complete ＂3414＂ fertilizer test and data analysis of 3414 model of Data collected system of soil testing and formulated fertilization by the ministry of agriculture. According to the indices of soil nutrient, the recommended fertilization was proposed. It is found that the dose rate were 166.80, 184.10, and 130.20 kg/hm^2 higher than N, P2O5, K2O when the index of soil nutrient is extremely low （the relative yield is less than 50%）. When the index of soil nutrient is low, slight low, meddle level and slight high in turn, applying nitrogen of 149.55 - 166.80, 117.75 - 149.55, 71.10 - 117.75, 9.90 - 117.75 kg/hm^2, applying P2O5 of 173.90 - 184.10, 145.50 - 173.90, 99.20 - 145.50, 34.80 -9.20 kg/hm^2, and applying K2O of 129.50 - 130.20, 122.00 - 129.20, 107.40 - 122.00, 86.00 - 122.00 kg/hm^2. Otherwise, it was 9.90 kg/hm^2, 34.80 kg/hm^2 and 86.00 kg/hm^2 less than N, P2O5, K2O when the index of soilnutrient is high.