The crop is fertilized in the cold season and it is better to use ammonium bicarbonate than urea.
First, ammonium bicarbonate is an ammonium fertilizer that can be directly absorbed and utilized by the crop after it is applied to the soil; and urea belongs to the ammonium ammonium fertilizer and needs to be converted into ammonium nitrogen under the action of urease secreted by the urea bacteria in the soil. Root absorption. Here, the rate of urea conversion mainly depends on the soil temperature at that time: Under normal circumstances, all urea applied to the soil is converted to ammonium nitrogen, which takes 7 to 10 days at a ground temperature of 10°C and 4 to 20°C. For 5 days, it takes only 2 to 3 days at 30°C. It can be seen that applying ammonium bicarbonate to crops during the cold season is faster than applying urea; if urea is used, it will tend to affect crop growth due to slower fertilizer efficiency.
Second, the utilization rate of ammonium bicarbonate is very low when the temperature is lower than 20°C. After being applied to the soil, ammonium ions can be rapidly adsorbed by the soil colloid, and thus it is not easy to lose water. After the urea is applied to the soil, it is present in a molecular state before it is converted into ammonium nitrogen, which is difficult to be adsorbed by the soil colloid and is easily lost.
The third is that the effect is good. According to the test, the application of ammonium bicarbonate in the low temperature season is 1~1.5 times higher than that in the high temperature season.
Greenhouse Drip Irrigation System
Fertigation is using your irrigator to fertilise the plants and soils as you water, which is the most efficient and advanced practice of fertilization. Aid of pressure system (or natural divide terrain), the soluble solid or liquid fertilizer, according to the soil nutrient content and crop fertilizer regularity and characteristics of species, with the fat of with irrigation water, through a controlled water supply pipeline system, supplying, the compatibility, water through the pipe and drop head form drip irrigation, uniform, regular, quantitative, infiltration area crop root growth and development, make the main root soil always stay loose and appropriate moisture content, at the same time according to different crop fertilizer characteristics, environment and soil nutrient content in soil; Crops in different growth phase water requirement, the different development stages of the fertilizer rule is the demand of design, the water and nutrient timing quantitative, provided directly in proportion to the crops.
Greenhouse Drip Irrigation System,Greenhouse Micro Irrigation System ,Plant Drip Irrigation
JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , https://www.spgreenhouse.com