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钾肥和氮磷肥料一样,是水稻生育所必须的要素之一。随着单产的不断提高,科学地增施钾肥显得日趋重要。为探讨钾肥的施用效果,根据省、市化肥试验协做网的要求,我们今年继续进行了钾肥试验。试验处理分氮区、氮磷区、氮钾区、氮磷钾区以及空白区等五个。施肥标准是:氮肥每亩用尿素50斤,分铺肥15斤、返青肥10斤,蘖肥15斤,穗肥10斤等四次施肥;含6%P_2O_5的过磷酸钙100斤,于拉拍时一次作基肥;钾肥为法国产硫酸钾,含 K_2O50%,
Potash, like nitrogen and phosphorus fertilizers, is one of the essential elements of rice growth. With the continuous improvement of yield, the scientific increase of potash fertilizer is becoming more and more important. In order to explore the application effect of potash fertilizer, according to the requirements of provincial and municipal fertilizer test cooperative network, we continued the potash test this year. Nitrogen and nitrogen zones, N and P zones, N and K zones, NPK zones and blank zones were tested in the experiment. Fertilization standards are: nitrogen fertilizer per mu with 50 pounds of urea, shop shop fertilizer 15 pounds, green tea back to 10 pounds, 15 pounds of tillering fertilizer, spike fertilizer 10 pounds four fertilizers; containing 6% P2O5 superphosphate 100 pounds, Shot time as a base fertilizer; potassium for the French-made potassium sulfate, containing K_2O50%