Effect of foliar application of iron,zinc mixed fertilizers on the content of iron,zinc,soluble sugar and Vitamin C in green pea seeds THE EFFECTS OF MIXTURES OF PHOXIM (OR DIMETHOATE) AND FENVALERATE ON RESISTANT EVOLUTION IN GREEN PEACH APHIDS STUDIES ON THE ACTION THRESHOLD OF GREEN PEACH APHID DAMAGED TO TOBACCO VARIETY Extraction and analysis of hyper-spectral data from typical desert grassland in Xinjiang PERFORMANCES OF EXPERIMENTAL POPULATIONS OFAPHIDS, MYZU PERS/CAE(SULZER), FEDON THE RAPE LEAVES EXPOSED TO SO2