不同钾肥用量及微肥对藠头产量及生长发育的影响

Effects of Different Potassium Fertilizer Amount and Trace Fertilizer in Allium chinense G.Don

以生米藠头为材料,研究了不同钾肥用量及微肥对藠头产量及生长发育的影响。结果表明:在氮、磷肥运筹相同条件下,藠头产量、单穴分蘖数、单个鳞茎重均随钾肥用量的增加呈先增加后减少的趋势。K_2O 9 kg/667m^2时产量最高,CK(不施钾肥)产量最低。相关分析表明,施钾量和产量、施钾量和单穴分蘖数均呈极显著抛物线相关(相关系数分别为r=0.930 4**,r=0.883 7**),施钾量和单个鳞茎重呈显著性抛物线相关(r=0.870 0*)。单穴分蘖数和产量呈极显著正相关(r=0.958 7**),单个鳞茎重和产量呈极显著正相关(r=0.918 3**)。施用不同微肥对藠头的产量影响不同,单施硼肥有利于藠头分蘖和鳞茎生长,而施用锌肥和锌、硼肥混施不利于藠头增产。因此,在生米藠头生产上,最佳施钾量为9 kg/667m^2,且配合适量的硼肥施用增产效果更好。

Used Allium chinense G.Don of Shengmi as the material,this article studied the effects of different potassium fertilizers and trace elements fertilizers on yield and growth of Allium chinense G.Don.The results showed that,under the same conditions of nitrogen and phosphate fertilizer utilization,the total yield,single tiller number and single bulb weight increased firstly and then decreased with the potassium fertilizer increased.K4(K2O 9 kg/hm2)has the highest yield,while CK(non-potassium fertilizer)is the lowest.The correlation analysis showed that,there was a parabolic significantly positive between the amount of potassium applied and the yield,also between the amount of potassium applied and the number of single tillers(correlation coefficient r=0.930 4**,r=0.883 7**),the amount of potassium applied and the weight of single bulb was significant parabolic correlation(r=0.870 0*).There was a very significant positive correlation between the number of single tillers and the yield(r=0.958 7**).The weight of single tillers and yield showed a very significant positive correlation(r=0.918 3**).It had different effects of the trace elements fertilizers on the yield.Applied Boron alone is beneficial to tillering and bulb growth,while apply zinc or zinc and boron applied together was not conducive to the increase of the yield.Therefore,in the production of Allium chinense G.Don of Shengmi,the best amount of potassium fertilizer is 9 kg/hm2,and applied appropriate amount of boron fertilizer can increased the yield better.