It is very important to strengthen the management of the fertilizer and water after the summer maize is sown from seedlings and jointed. Farming Road: "Three minutes, seven minutes, scientific application of fertilizer and water is the key." Practice has proved that if we want to achieve scientific management of fertilizers and waters, implement the "three attack" fertilization method, that is, the use of stalk shank fertilizer, attacking panicle fertilizer and attacking granule fertilizer.
The first is to attack the stalk manure. Before the seedlings are sown to the small bell-mouth stage, the vegetative growth is the main stage. Generally the early-maturing varieties are spread in 5 to 6 leaves, the medium-maturing varieties are spread in 7 leaves, and the tassel growth cone begins. Elongation is one of the best fertilization periods for corn. The amount of fertilization accounts for about 30% of the total fertilization. At this time, sufficient fertilizer and water are the key to promoting strong and early seedling growth and to lay a good breeding shelf.
The second is panicle fertilizer, which is a large bell-mouth period before corn heading. It is the vegetative and reproductive growth stage. At this time, the 11th leaf of the maize is unfolded and the plant has formed about 60%. The tassel has already started floret differentiation. It is a critical period for the formation of corn ear number, and if the fertilizer and water are sufficient to increase the number of corn grains, it is another crucial period for corn fertilization. The amount of fertilizer accounts for about 60% of the total amount of fertilizer, mainly nitrogen fertilizer, and it is also important to supplement a certain amount of potassium fertilizer. At this time, if the fertilizer supply is insufficient, it will inevitably result in large plants, small ear, and low yield.
The third is for grain fertilizer. During the tassel flowering period, when the corn is pollinated, the stems basically stop growing and have entered the main stage of reproductive growth. At this time, for corn with insufficient fertilizer supply or with defertilization after heading, a tapping fertilizer should be applied. Fast and late-maturing varieties in middle production areas are particularly important. Fertilization accounts for about 20% of total fertilization. Drought watering ensures sufficient fertilizer and water in the later stage to prolong the functional period of the leaves, which is conducive to the synthesis, operation, and storage of nutrients to the grains, achieving the goal of high grain-to-grain grain filling.
The first is to attack the stalk manure. Before the seedlings are sown to the small bell-mouth stage, the vegetative growth is the main stage. Generally the early-maturing varieties are spread in 5 to 6 leaves, the medium-maturing varieties are spread in 7 leaves, and the tassel growth cone begins. Elongation is one of the best fertilization periods for corn. The amount of fertilization accounts for about 30% of the total fertilization. At this time, sufficient fertilizer and water are the key to promoting strong and early seedling growth and to lay a good breeding shelf.
The second is panicle fertilizer, which is a large bell-mouth period before corn heading. It is the vegetative and reproductive growth stage. At this time, the 11th leaf of the maize is unfolded and the plant has formed about 60%. The tassel has already started floret differentiation. It is a critical period for the formation of corn ear number, and if the fertilizer and water are sufficient to increase the number of corn grains, it is another crucial period for corn fertilization. The amount of fertilizer accounts for about 60% of the total amount of fertilizer, mainly nitrogen fertilizer, and it is also important to supplement a certain amount of potassium fertilizer. At this time, if the fertilizer supply is insufficient, it will inevitably result in large plants, small ear, and low yield.
The third is for grain fertilizer. During the tassel flowering period, when the corn is pollinated, the stems basically stop growing and have entered the main stage of reproductive growth. At this time, for corn with insufficient fertilizer supply or with defertilization after heading, a tapping fertilizer should be applied. Fast and late-maturing varieties in middle production areas are particularly important. Fertilization accounts for about 20% of total fertilization. Drought watering ensures sufficient fertilizer and water in the later stage to prolong the functional period of the leaves, which is conducive to the synthesis, operation, and storage of nutrients to the grains, achieving the goal of high grain-to-grain grain filling.
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