Wheat seedlings

Wheat growth and development to the winter and spring season, the wheat seedlings often appear yellow or even dead, and rely on a single fertilization can not turn green seedlings. There are several phenomena in the yellowing of wheat seedlings. If no remedial measures are taken in time, serious wheat production may be reduced.
Insect pests yellow: Wheat leaves and wheat spiders draw yellow leaves from the leaf sap, mainly before and after the wintering period. Per 667 square meters available 40% omethoate EC 65 ~ 75 ml of water for 50 kg spray control.
Yellowing of disease: Wheat sheath blight damages roots and culms, impedes the transportation of nutrients and moisture and causes yellowing of wheat leaves. Each 667 square meters can be used 12.5% ​​wolfberry fruit 20 grams or 20% Jinggangmycin 50 grams 50 kilograms of water stem-based spray control.
The lack of fertility yellow: Mainly occurs in the soil fertility is poor, a serious shortage of base fertilizer plots, mainly yellow color, poor tiller, weak seedlings. In addition to the application of organic fertilizer in such wheat fields, it is necessary to increase the appropriate amount of fertilizer. Apply urea 7.5 to 10 kg per 667 square meters, 30 kg of phosphate fertilizer, deepen the ditch; apply urea 1 kg per 667 square meters plus foliar spray of 5 ml of foliar to 50 kg of water, which can prompt the leaf color to turn green quickly .
Density is too large yellow: uneven sowing or excessive sowing, so that the wheat field population density will also lead to yellow wheat seedlings. The remedial measures are rapid seedlings and timely fertilizer. If you have entered the jointing period, you can take the pressure seedling method to remedy.
Yellow seedlings: mainly occurs in clay soils and low-lying fields. The remedial measures are to clean up the ditch in time, eliminate waterlogging, reduce the groundwater table and the humidity in the field, timely cultivating loose soil, and topdressing available nitrogen fertilizer.

Thoracoscopic Knot Pusher

ZHEJIANG SHENDASIAO MEDICAL INSTRUMENT CO.,LTD. , https://www.shendasiaomed.com