Winter and early spring temperatures are low, and wheat field management should pay attention to two points:
First, the control of wheat aphids, red spiders and other pests when sneezing omethoate is better than spraying dimethoate. This halo, because the effect of dimethoate on the poisoning effect of pests is significantly reduced, while the effect of omethoate on human temperature is small, even at lower temperatures (below 15 ° C), it can be normal. The insecticidal effect. Similar to omethoate, there is also a pyrethroid, which is more toxic at low temperatures (15 ° C) than at high temperatures (25 ° C).
Second, the application of ammonium bicarbonate is better than urea when topdressing. As the saying goes: "It is good to fertilize and apply well." Ammonium bicarbonate can be directly absorbed and utilized by wheat after being applied to the soil, and urea needs to be converted into ammonium carbonate by the action of urinary bacterial enzymes in the soil to be absorbed by the roots. Here, the construction of urinary oligo-conversion depends mainly on the soil temperature at that time. Under normal conditions, all the urea applied to the soil is converted into ammonium carbonate, which takes 7 to 10 days at a ground temperature of 10 ° C, and only needs 30 ° C. 2 to 3 days. It can be seen that the application of ammonium bicarbonate in wheat winter and early spring is faster than urea. If urea is applied, it will often affect the growth of wheat seedlings because of the slow effect of fertilizer.
China Extract Powder For Use As Dietary Supplement Extract Powder, Extract Powder Manufacturer
Shaanxi Kang New Pharmaceutical co., Ltd. , https://www.anabolicsteriod.com