Is fertilization effective at low temperature?

In late autumn and early winter, the weather is getting cold. It is cold in autumn and winter, so how to fertilize at low temperature is a problem. Here, I will introduce fertilization technology at low temperature.

Fertilization technology in low temperature weather

Some fertilizers can be directly absorbed by crops after being applied to the soil, while others cannot. Adding phosphorus and zinc fertilizers can effectively enhance the frost resistance of plants. Therefore, we should make full use of natural conditions and apply fertilizer scientifically according to fertilizer characteristics, and we should not blindly apply fertilizer, which will affect crop growth. So how to fertilize skillfully in low temperature weather?

Proper application of ammonium bicarbonate is not easy to decompose at low temperature, which is beneficial to improve the utilization rate of fertilizer. Ammonium bicarbonate is an ammonium nitrogen fertilizer, which can be directly absorbed and utilized by crops after being applied to the soil. It is a typical "quick-acting fertilizer" with fast fertilizer efficiency. Can provide nitrogen nutrition for crops in time. Some people have done experiments, and the effect of topdressing ammonium bicarbonate in wheat field in cold weather is 1- 1.5 times higher than that in high temperature season.

Avoid urea urea belongs to acyl ammonium nitrogen fertilizer, which can not be directly absorbed and utilized by crops after being applied to soil. Urease secreted by urea bacteria in soil needs to be converted into ammonium nitrogen for root absorption. The conversion rate of urea mainly depends on the soil temperature at that time. Under normal circumstances, all urea applied to the soil is converted into ammonium nitrogen, which takes 7- 10 days at ground temperature/kloc-0℃, 4-5 days at 20℃ and only 2-3 days at 30℃. If urea is applied, it will often affect crop growth because of the slow development of fertilizer efficiency.

The absorption of phosphorus and zinc by crops with increased phosphorus and zinc fertilizer is obviously affected by temperature and light. Low temperature and insufficient light in autumn and winter are easy to induce phosphorus and zinc deficiency in overwintering crops, so phosphate fertilizer and zinc fertilizer should be applied appropriately. In addition, phosphorus can enhance the cold resistance of plants, and increasing the application amount of phosphate fertilizer is also beneficial to prevent crops from freezing.

The above are some introductions of fertilization technology in low temperature weather. You can apply fertilizer reasonably according to the local climate and referring to the above methods.