MnSO_4叶面喷施对马铃薯产量形成的影响

以"克新13号"马铃薯品种为试验材料,在现蕾期和块茎膨大期利用不同浓度的硫酸锰叶面喷施处理2次,通过测定根系活力、叶绿素含量、光合速率和块茎产量的变化,研究硫酸锰对产量形成的作用效果。结果表明:适量硫酸锰(0.2%~0.5%)可有效提高马铃薯根系活力、叶绿素含量及光合速率,促进光合产物积累,从而有效提高马铃薯单株产量;硫酸锰过量对产量形成会产生不利影响。

Effect of Manganese Sulfate Application by Leaf Spraying on Potato Yield Formation

The root activity,leaf chlorophyll content,photosynthetic rate and tuber yield of cv.Kexin 13 were measured when the manganese sulfate was applied to it by leaf spray in different levels of concentration at the budding and the tuber bulking stages to study the effect of manganese sulfate on the yield formation.The results showed that appropriate levels(0.2%-0.5%)of manganese sulfate could effectively increase the root activity,leaf chlorophyll content and photosynthetic rate,and promote the accumulation of photosynthetic products,therefore,it cauld increase the potato tuber yield per plant effectively.However,too much manganese sulfate could produce negative effects on the formation of potato yield.