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本文报道了用磷、钾肥(过磷酸钙、硫酸钾)做种肥以增强抗病力减轻蚕豆苗期根病和增产的实际效果,盆栽试验结果表明,磷钾肥混合减轻病指数12.16％—32.2％,有效茎枝数和单枝结荚数亦增加,区域性田间小区试验结果表明,磷钾肥混合平均比对照减轻病指数38.8％—50％,单独施钾肥减轻病指数(晋宁县除外)20.9％—38.2％,单独施磷亦可减轻8.8％—27.8％,因受三月初严重冻害,晋宁和曲靖之试验田均失收,大姚亦受严重损失,但磷钾处理(PK)仍比对照(CK)增产42.9％,磷处理增产34.2％,钾处理增产18.2％,保山市的磷钾处理实产比对照每亩增产155斤,磷处理增产157斤,钾处理增产88.5斤,又从曲靖的试验表明,施用磷钾混合肥对蚕豆根、根瘤的重量有显著的增长效果,但施钾肥茎叶之重量反而减少,其原因尚须进一步研究,总之施用磷钾肥兼有减轻蚕豆苗期根病和增产的显著效果,还有增强蚕豆抗寒抗旱的作用。
In this paper, the practical effects of using phosphorus and potassium fertilizers (superphosphate and potassium sulfate) as seed fertilizers to enhance disease resistance were studied. The results of pot experiment showed that phosphorus-potassium fertilizer reduced the disease index by 12.16% -32.2 %, The number of effective stems and the number of pods per plant also increased. The results of regional field trials showed that the average phosphorus and potassium fertilizer ratio reduced the disease index by 38.8% -50% compared with the control and the disease index (except Jinning County) alone was 20.9% % -38.2%, phosphorus alone can also reduce 8.8% -27.8%, due to severe frost damage in early March, Jinning and Qujing of the experimental field were lost, Dayao also suffered serious losses, but the phosphorus and potassium (PK) is still higher than the CK increased 42.9%, P increased 34.2% and K increased 18.2%. Baoshan produced about 155 kg per mu for P and K, 157 kg for P and 88.5 kg for K, Qujing test showed that the application of phosphorus and potassium fertilizer on Vicia faba root nodule weight has a significant growth effect, but the weight of the fertilizer and potassium leaves instead reduced, the reason still needs further study, in short, the application of phosphorus and potassium both reduce seedling stage The root cause and the remarkable effect of increasing yield, also Enhance the role of cold beans drought.