There are different reasons for wheat yellow seedlings.
Insect pest yellow seedlings
After the damage caused by wheat bran, if the heart is atrophic and stagnant, the leaves are yellow, and the water loss is withered. Select dichlorvos, trichlorfon, dimethoate, etc. and add 1000 times of vinegar to spray and kill. Adding 2% urea can promote transformation of the wheat seedlings.
Disease yellow seedlings
Wheat seedlings caused by yellow rust infection, initially distributed in spots, should be promptly used drug control, to prevent the spread of proliferation, available 15% triadimefon 1000 times liquid, even spray 2 or 3 times.
Nitrogen deficiency yellow seedlings
The results showed that the wheat seedlings chlorosis and yellow evenly, the tips of the leaves were dry, the old leaves of the lower part were yellow and withered, the dwarf leaves were weak, and the tillers were few. This kind of yellow seedlings are mostly found in plots with poor soil, insufficient base fertilizer, or unsatisfactory topdressing. For yellow seedlings caused by nitrogen deficiency, promptly apply nitrogen fertilizer such as ammonium bicarbonate, urea, and human fecal urine to promote long growth.
Manganese deficiency seedlings
The wheat lacks manganese, and the new leaf veins are chlorotic in strips, turning yellowish green to yellow. Sometimes the leaves are light green, the yellow stripes expand into brown spots, and the tips of the leaves scorch. In this regard, 0.1% to 0.3% of manganese sulfate solution should be promptly sprayed 2 to 3 times.
Potassium deficiency seedlings
Wheat first begins yellowing from the tip of the old leaf, and then stretches along the leaf veins. The yellowing line and the healthy line are distinct and inlaid. The leaves are yellow and soft, and are often affixed to the ground later. This type of yellow seedlings occurs mostly in sandy areas and is generally characterized by edging and edging.
For potassium deficiency and yellow seedlings, 100 kg of ash per acre can be applied to the foliage, or 10 kg of potash can be traced. Foliar can also be sprayed with 1% potassium chloride solution, or 2% ~ 3% potassium nitrate solution, or 5% of the grass ash leaching solution, or 0.3% potassium dihydrogen phosphate solution, and generally spray 2 ~ 3 times.
new high-performance sensors can effectively detect smouldering fires It can detect all kinds of indoor smoke. When the indoor smoke volume reaches the alarm concentration, the detector will alarm, the red indicator light will be on, and the buzzer will beep, so as to prompt the user to timely check the causes of the leakage accident and eliminate potential safety hazards.
Carbon Dioxide Detector,Carbon Monoxide Sensor,Portable Carbon Monoxide Detector,Smoke And Carbon Monoxide Alarm
Rictron Industrial Co., Ltd , https://www.szrictron.com