Preliminary Study on Microbial Activated Potassium Feldspar for Maize's Resistance to Weak Light and Low Temperature Stress
The fertilizer efficiency of potassium feldspar activated by potassium bacteria is not only related to the activation effect of microorganisms,but also to their ability to resist light and temperature stress.Maize seedling cultivation experiments are conducted under weak light,full light,and weak light with low temperature conditions in three constant temperature light incubators to compare the fertilizer efficiency of chemical fertilizer(potassium chloride),microbial activated potassium feldspar,and chemically activated potassium feldspar under different light and temperature conditions.The results show that microbial activated potassium feldspar have better fertilizer efficiency than chemical fertilizer under both full and weak light conditions,revealing that microorganisms not only activate mineral nutrients,but also have the function of resisting light and temperature stress.Under weak light conditions,the fresh and dry weight of maize treated with microbial activated potassium feldspar are superior,indicating that the organic carbon nutrients provided by microbial secretions can supplement the deficiency of photosynthetic products under weak light conditions,highlighting its advantages.Under full light conditions,the fresh and dry weight of maize treated with chemically activated potassium feldspar are higher,indicating that the photosynthetic products under full light conditions are significantly increased compared those under weak light conditions,greatly alleviating carbon deficiency and enabling better fertilizer efficiency.In terms of resistance to light and temperature stress,chemical fertilizer treatment still does not have the advantage of microbial activation.