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Six questions for fertilizer agents

1、 Is the content of cheap fertilizer the same as that of expensive fertilizer?

A: different. The famous brands of large factories have enough content, and the content of all kinds is only high but not low. The national standards are strictly implemented.

2、 Many fertilizers have low prices and perform well after use. Why?

A: now most manufacturers increase the content of nitrogen and reduce the content of potassium, or even none. Example: 15-15-15 45% is made into 20-10-5. After 35% is used, the seedlings are neat and strong, which can be de fertilized in the later stage, and the final yield can not go up.

3、 Why is the effect of cheap chemical fertilizer better than that of famous chemical fertilizer?

A: ammonium bicarbonate takes effect on the same day, and the fertilizer effect period is 15 days; Ammonium chloride takes effect in three days, the fertilizer effect period is 25 days, and the fertilizer is removed in the later stage. Urea takes effect in seven days and the fertilizer effect period is 45 days. Compound fertilizer takes effect in ten days and the fertilizer effect period is 90 days.

4、 The cost of famous chemical fertilizer is high?

A: a bag of cheap chemical fertilizer is used for 100 kg per mu, 100 yuan / mu. Famous brand chemical fertilizer is applied at 70 kg / mu, 90 yuan / mu. Famous brand chemical fertilizer is a good chemical fertilizer to really save money.

5、 Why do you think the output has not improved after the use of famous chemical fertilizer?

A: the principle of nutrient return is that you can absorb as much nutrients from the soil as you harvest, and return as much as good chemical fertilizer. That is to say, if you use inferior chemical fertilizer for three consecutive years, you can catch up with it immediately, which is stronger than the original, but can be compared with the original good chemical fertilizer. If you use good chemical fertilizer for three consecutive years, the output will not be low if you don't use chemical fertilizer for one year.

6、 Why do some small factories pass the chemical fertilizer test, and the price is different from that of large factories?

A: now functional departments only test n, P and K, and many small factories can do a good job of superficial articles; Famous factories also add various medium and trace elements, about 300 yuan per ton, to meet the needs of high crop yield.