First, on the potassium nitrate:
1, potassium nitrate is nitrogen, potassium two compound fertilizer, of which nitrogen is 13.5, potassium is 46. considered a high concentration of potassium. Potassium nitrate used in the soil which is easy to move, suitable for crop top dressing, especially in the late use of topdressing.
2, potassium nitrate in the nitrate nitrogen, conducive to crop absorption, coupled with relatively high potassium content, so the use of more crops in the expansion period, the effect is also more obvious. However, in some crop color period, the amount of potassium nitrate should be cautious, excessive use of nitrogen because too much fruit does not color.
3, potassium nitrate in tobacco, grape fruit, Potassium Nitrate fruits and vegetables and other economic crops on the use of more efficient fertilizer, agricultural products quality is better.
4, nitrate in the process of dissolving endothermic, so when used in winter as little as possible a few times, with the use of humic acid products.
5, due to NO3- (nitrate) and Cl- (chloride ion) between the anion antagonism, making potassium nitrate can resist the crop of soil Cl- (chloride ion) absorption.
6, in some soil environment, potassium nitrate in the NO3 (nitrate) by crop absorption faster, so a small amount of residual potassium ions by soil adsorption, or generate K2CO3 (potassium carbonate) and other weak acid and alkali salt, In this soil, potassium nitrate is a physiological alkaline fertilizer, Potassium Nitrate so it is more suitable for use in acidic soil.
Second, the use of potassium nitrate in a variety of crops
On the application of potassium nitrate in a variety of crops, I said below for reference only, is based on the use of some cat friends summed up, Potassium Nitrate not necessarily suitable for all regions, we also have to be based on local specific circumstances to determine.
1, Apple: late 10-15 kg once, with two Chong Shi.
2, grapes: grapes turn color one-third use 5 kg, once, red blood.
3, watermelon, melon, melon, etc.: late 4-6 kg once, or 2-3 kg twice.
4, banana: fruiting period 5 kg once, 3-4 times.
5, beans, eggplant, pepper, Potassium Nitrate tomato and other fruits and vegetables: 3-5 kg, half a month.
6, potato sweet potato, etc.: late 5-10 kg, once.
In addition, the drip irrigation, sprinkler irrigation and the specific amount is also different, it is recommended that you do some more try. The amount of potassium nitrate and the use of base fertilizer and the number of methods and methods are very large, which is why you see someone else with the effect is very good, but their use of the effect is not so good reason, Potassium Nitrate because you do not know people in front of What to use.
Third, pay attention to matters
1. Keep away from heat and fire during transport and storage.
2. According to the Ministry of Agriculture on fertilizer registration management measures Article XIV, the fertilizer from registration.
3. EC value: the concentration of soluble salt or ion in solution.
4. easy to agglomerate, it is recommended to store a small number of goods.