论文部分内容阅读
对高产田小麦施用钾肥的增产效果进行了田间试验。结果表明,在高产麦田,土壤速效钾100ppm-K左右,施用钾肥的效果很显著,表现为小麦分蘖早、蘖壮,单株分蘖及次生根多;年后返青、拔节早,成熟前单株绿叶多;茎秆壁厚度增加,基二节横向破裂耐压力明显提高,较对照增加1.10N;成穗率高,穗粒数增加1.4粒/穗,千粒重增加3.1g,增产28.4％。试验条件下,氯化钾的最佳用量为每亩20kg,N∶P_2O_5∶K_2O≈3∶1∶1.6。
A field experiment was conducted on the yield-increasing effect of potassium fertilizer on high yield wheat. The results showed that in high-yield wheat field, available potassium was about 100ppm-K, the effect of applying potassium fertilizer was very obvious, which showed early tillering, tillering, tillering and secondary root elongation of the plant; The stalk wall thickness increased, basal transverse rupture pressure resistance increased significantly, compared with the control increased by 1.10N; spike rate, spikelets increased by 1.4 grain / spike, 1000 grain weight increased by 3.1g, an increase of 28.4%. Under the experimental conditions, the best dosage of potassium chloride is 20kg per mu, N: P_2O_5:K_2O≈3:1:1.6.