blight
The disease in the early birth the illness is lighter, since the early flowering show disease, the main symptoms of leaves become yellow, from bottom to top, veins brown leaves occur easily.Middle light comes on one side of the stem vascular bundle browns, or all the browns, plant GenLiang, less easy to pull out, root rot discoloration.The disease within the PengShi high humidity and serious when continuous cropping.
Stem JiFuBing
This disease from stem base more disease, early onset appear white reddish brown ulcer disease spot, see sag germs spread to stem tissues, stem within the organization into a brick red.Prevention and treatment of the disease to combination of physical and chemical control.
The chain of spore root rot
Early disease occurs, the disease department with particular shaped reddish brown spots, into the dark brown or dark brown after disease spot, slightly concave or cracking, expanding gradually, after the main root rot or necrosis, pull out the buttock, the vascular bundle is reddish brown, humidity is big, the pink stem base mold.
Physiological diseases
Kidney bean to drought and waterlogging resistance, like fertile soil, loose, permeability is good rhizosphere environment conditions, if the heavy clay soil, poor permeability, water environmental conditions, such as field are likely to cause leaf etiolation, fall off, serious when dead tree occur.Overuse of chemical fertilizer also can cause the soil salt ion concentration is too high, easy cause tree roots rotted death phenomenon.
In view of the above diseases from physical control and chemical control in two aspects:
Physical prevention and control
On the basis of leveling the ground ridging cultivated, prevent the field water retting root problem.Enhance soil at the same time appear a sacrifice, is conducive to root growth, reduce the disease infection risk, improve the ability of root system of art.
Chemical control
On the basis of physical control, chemical control, mildew blight can use 30% evil, winding copper ammonia filling root control;Stem JiFuBing available times, methyl made prevention and control of low phosphorus;Available chain spore root rot away bacteria spirit or add agricultural prevention and cure.