Organic Nitrate Fertilizer

Product:Organic nitrate fertilizer-Urea

Molecular formula:CH₄N₂O

Molecular weight：60.05

Contraindications to the application of urea to crops：
1, avoid mixing with ammonium carbonate
2, avoid the surface spreading
3, avoid as seed fertilizer
4, avoid irrigation immediately after application
5, avoid mixing with alkaline fertilizer or apply at the same time
6, avoid applying on celery

7, avoid using too much
8, avoid high concentration of foliar spraying
9, avoid applying too late
10, avoid single application

The correct use of urea
1, balanced fertilization
Urea is a pure nitrogen fertilizer, does not contain a large number of elements necessary for crop growth in the phosphorus, potassium, therefore, to do fertilizer should be based on soil testing, the use of formulated fertilizer technology, balanced application of nitrogen, phosphorus, potassium fertilizer.
First all the phosphorus, potassium fertilizer and part (about 30%) of nitrogen fertilizer needed for the whole life cycle of the crop combined with the whole ground bottom application. And then the remaining 70% of nitrogen fertilizer (can use urea) as a follow-up fertilizer into the crop’s fertilizer needs critical period, the efficiency of about 60% of the follow-up period, the late follow-up of about 10%. Only nitrogen, phosphorus, potassium 3 kinds of fertilizer reasonable cooperation, scientific application, in order to make the utilization rate of urea application.

2, timely application
In agricultural production can often see some unreasonable fertilization phenomenon: every year after the spring wheat greening period, farmers take the opportunity to watering water will be sprinkled or flushed into the wheat field; corn seedlings, farmers in the rain will be sprinkled into the field of urea; cabbage seedlings with watering will be flushed with urea; tomatoes in the seedling watering urea, and so on.
This urea, although the fertilizer used, but the waste phenomenon is serious (ammonia volatilization, urea particles with water loss), will also lead to nutritional growth over-exuberance, wheat, corn, late collapse, tomato “blowing flowers”, cabbage cabbage cabbage package delayed and other undesirable phenomena occur.
Each crop on the absorption of nitrogen, phosphorus, potassium have a specific critical period (i.e., crop absorption of a particular element of the period). Lack of fertilizer (nitrogen, phosphorus, potassium) in this period, the crop’s yield declines, the quality of the crop declines, the impact, even if the subsequent application of adequate fertilizer, the impact on crop yield and quality can not be reversed. In addition to this, there is an efficiency period, that is, this period of fertilizer crops can obtain higher yields, the efficiency of crop use of fertilizer.
As can be seen from the above analysis, only in the nutritional critical period of the crop and the efficiency of the period of fertilizer, in order to improve the utilization of fertilizer, so that the crop to achieve high yield and quality.

Urea to do fertilizer, should be in the crop of nitrogen critical period, 1 week before the efficiency of the application. Different crops of the critical period of fertilizer, efficiency period is different, should be treated differently, reasonable application.
For example, wheat, corn and other grass crops in the nitrogen critical period in the tillering period, spike differentiation period, cotton in the bud bolling period. Nitrogen efficiency period of wheat in the nodulation to the tassel period, rice in the tillering to the nodulation period, corn in the trumpet period, tomato in the fruiting period, cabbage in the rosette period, sunflower in the bud period, soybeans in the early flowering period.

Specification：

Urea
Items	Standard	Standard
Appearance	White Granular	White Prilled
N	46.4%min
Biuret	0.9%max
Moisture	0.5%max
Size	2.0-4.75mm,96%min	0.85-2.80mm,98%min