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The use of high-quality fertilizer as a base fertilizer can increase soil organic matter and soil aggregate structure, and provide various nutrients needed for the growth and development of corn. Fertilizer does not have this advantage. "Insufficient base fertilizers and fertilizers" can only make the land more and more lean, more and more kind of consolidation.
Misunderstanding 2: There is fat on the chase, there is water to pour
In the seedling stage before jointing, if the fertilizer is not applied and watered according to the actual conditions such as the degree of drought, good circulation, and the strength of the seedlings, the seedlings in the aboveground part tend to be long and the roots in the underground part are difficult to deepen and the seedlings are lost. The seedlings have the opportunity to exercise and lay down hidden dangers for later planting. Excessive top-dressing watering during the grain filling period increases investment and wastes fertilizer. It also causes corn gluttony to ripen and suffers from frost.
Misunderstanding 3: Most of the fertilizers mostly fight for food
Fertilizer is a prerequisite for high yields of corn. However, improper use is only harmful and unprofitable. Spring sowing maize began from the jointing stage, vegetative growth and reproductive growth go hand in hand, from booting to heading to the peak period, from flowering to grain filling and turned to reproductive growth. The period from booting to grain filling is the period with the most need for water and fertilizer, and cultivation requires implementation of "three top-dressing, three watering, and three middle-cultivation." After the beginning of the jointing, the first hole dressing was performed and the cultivator was properly cultivated. After the start of booting, the second top dressing was performed and the cultivator was cultivated. During the grouting, carry out the third hole dressing. The total amount of top dressing should not exceed 30 kg. The amount of top-dressing fertilizers can be controlled by the principle of light weight, light weight and light weight. The jointing period is 30% of the total amount of fertilizer, the booting period is 60% of the total amount of fertilizer, and the filling period is 10% of the total amount of fertilizer. Fertilizer to urea is appropriate.
Misunderstanding 4: Pay attention to nitrogen, phosphorus and potassium, and neglect micronutrients
Micro-fertilizer has a great influence on the growth of crops. Take zinc fertilizer, corn reacts very sensitively to it. Experiments have shown that: When applying zinc fertilizer to corn, the number of grains per ear can be increased by 50 to 80, the grain weight can be increased by 15 to 30 grams, the baldness rate can be reduced by about 50%, and the yield per mu can increase by 8% to 15%.
Misunderstanding 5: No need for top dressing and cultivator after heading
After corn heading, there are many plots due to the insufficient application of basal fertilizer or the quality is not high, the efficiency of top dressing has been exhausted, and the nutrients in the soil have not been able to meet the growth needs of corn. This urgently requires the application of some fast-acting N and P fertilizers to prevent premature senescence, promote grout and grain filling, and increase grain weight. This "seed-seeking fertilizer" should be applied early, apply acupuncture points, and apply in appropriate amounts. To change the old practice of "setting up the autumn hooks, eliminating leisure and other autumn harvests", we must be honest, diligent, and always keep the land.
Five Misunderstandings of Maize Fertilization
Misunderstanding 1: The base fertilizer is insufficient to recover fertilizer