Rationally Applying Fertilizer to Promote Late Growth of Maize
The fertilization of corn should be determined according to such indicators as the amount of fertilizer needed, soil nutrient supply, fertilizer utilization, and planned production. Generally every hectare applies high-quality farmyard manure 30,000-30,000 kilograms, diammonium phosphate 150-200 kilograms, urea 150-225 kilograms, potassium sulfate 50-75 kilograms, zinc sulfate 7.5-15 kilograms. Among them, 30% of urea was used as base fertilizer, and 70% was topdressed in corn 6-7 leaf stage. At the same time to early Miaofei, especially in the northern spring corn zone, low temperature, low rainfall, fertilizer effect is relatively slow, early Miaofei should be applied; summer corn as much as possible to grab the live broadcast, in general, no basis fertilizer, so early Miao Miao . Appropriate panicle fertilizer, ear fertilizer and more in the big bell mouth fertilizer. Regardless of the soil fertility of the plot, the yield increase of panicle fertilizer in spring and summer maize fields was significant. The topdressing fertilizer should be applied deeply, and the deep fertilizer has a long and stable effect, promote deep roots, expand the absorption area, and facilitate production increase.
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