trace-element fertilizer
2.The results showed that B,Zn,Mn fertilizers could promote cupplant growth,enforced resistence and enhance forage yield under certain concentrations. Of three trace element fertilizers,B fertilizer could increase leaf area index (LAI),chlorophyl content and forage yield by 7.03%,7.23% and 8.42% respectively in the concentration of 600×10~(-6);
3.Based on the ample N,P,K fertilizer supply,adopting the method of spraying leaf surface,the experiments was conducted to investigate the effect of 8 kinds of trace element fertilizers (Zn,Fe,Mo,Co,B,Cu,Se,Mn )mixed spraying on the yield of forage and quality of Medicago sativa.
