When maize fertilizer
Corn fertilizer commonly divided into 3-4 times.Seedling fertilizer for the first time: when the corn grow 5-7 leaf, give priority to with nitrogen fertilizer, urea 15 kg per mu shi, zinc sulfate after 1-2 kg stir well hole.The second stem weight: application in maize jointing stage.The dominated by nitrogen fertilizer.Third earing fertilizer: applied in the corn before tasseling stage, this period is corn flower bud differentiation, flower development stage, the need to high nutrient, fertilizer effect is most obvious, this time should be given priority to with available nitrogen, phosphorus fertilizer.The fourth seed, fertilizer, applied after pollination, still give priority to with nitrogen fertilizer.
What is a good fat corn fertilizer use
First of all, should understand the laws of corn fertilizer: corn seedling stage is the critical period of p and k fertilizers, loudspeakers - before tasseling stage is the critical period to nitrogen.
Second, the determination of fertilizer rate shall be determined to produce fertilizer, general 700 kg per mu plots of land to be applied into the urea 35 kg, diamine l5 kg, 20 kg potassium sulphate, above 800 kilograms per mu of land, to the quality of farm and micronutrient fertilizer such as zinc sulfate and borax.
Finally, fertilization period and method, seedling stage, p and k fertilizers should put all of about 20% of the nitrogen and zinc fertilizer the do basal (seed manure) at a time.Studies have shown that: the reasonable use of basal (seed manure) can increase about l5 %.Huge bellbottom period (1-1.5 m high) nitrogen, should be in about 60% of the total nitrogen, after tasseling into 20% of n fertilizer is best.From corn root 10 a 15 cm hole or trenching banding effect is best, don't broadcast, the water in dry fertilization to combine.
