Question 1: are the contents of cheap and expensive fertilizers the same?
Answer: different! The total nutrient content of the famous brand products of the big factory meets the standard, and the nutrient content of each product is only high but not low, and the national standard is strictly implemented; The total nutrient content of fertilizer in cheap small factories may meet the standard, but a single nutrient may not meet the standard. Which nutrient is expensive and which content is low.
Second question: many chemical fertilizers have low prices, but they also perform well after use. Why?
A: now most manufacturers increase the nitrogen content index and reduce the potassium content, or even do not. For example, 45% (15-15-15) content is made into 35% (20-10-5) content. After use, the seedling grows fast and intuitively good, but it can be de fertilized in the later stage, and the final output cannot go up.
Question 3: why is the effect of cheap chemical fertilizer better than that of famous chemical fertilizer?
A: do you know? At room temperature, 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; Controlled release fertilizer takes effect in 12-15 days, and the fertilizer effect period is as long as 100-120 days. Most people judge fertilizer efficiency by the nutritional indicators of plant height, leaf size and color. If they don't pay attention to the improvement of internal quality, the internal things are not easy to be found.
Four questions: cheap is expensive, expensive is cheap, how to say this sentence?
A: cheap fertilizer is 100 Jin per mu, 100 yuan / mu; Famous fertilizer is 70 Jin per mu, 90 yuan / mu; Is a good fertilizer that really saves money.
Five questions: why do you think the output has not improved after the use of famous chemical fertilizers?
A: according to the principle of nutrient return, you have to supplement the soil with as much nutrients as you collect grain, fruits and vegetables, and you have to return as much high-quality famous chemical fertilizers. If inferior chemical fertilizers are applied for three consecutive years, and then good chemical fertilizers are used immediately, the crops will grow much better than the original ones, which can be comparable to the crops that have been using good chemical fertilizers However, if good chemical fertilizer is used for three consecutive years, the output will not decrease even if chemical fertilizer is not used for one year.
