Corn booting management points
The booting period is a period when vegetative growth and reproductive growth of maize are progressing. The management of the field during this period is crucial for improving the corn yield. The key management measures are as follows.
1. The booting period of re-applied booting maize is the peak period of differentiation of spikelets and florets. It is the key period for determining the size of the ear and the number of grains, and it is also the peak period for the plants to need fertilizer. Therefore, ear-fertilizer had the best effect when the florets began to differentiate. At this time, the number of leaves of the corn plants was as follows: 12 to 15 leaves of the early-maturing variety and 8 to 9 expanded leaves, 14 to 17 leaves of the medium-maturing variety, 10 to 11 expanded leaves, and 16 to 19 leaves of the late-maturing variety. Expand 12 to 13 leaves. The application amount of the panicle fertilizer should be flexibly controlled according to the soil fertility, the amount of the base fertilizer and the reproductive status of the plant. Generally, the soil with low soil fertility and low basal fertility should be replanted with light green leaves and relatively weak growth potential. It is appropriate to account for 60% to 65% of the total top-dressing fertilizer; moderate soil fertility, robust plant growth, and dark green leaves The plots, which account for 50% to 55% of the total fertilizer, can be obtained; soils with high fertility, adequate fertile feet, well-developed root systems, dark green leaves, and lush growth plots are suitable for 45% to 50% of the total fertilizer. .
2. It is not only the peak season of demand fertilizer but also the peak period of water demand that is sufficient for the booting period of water-filling corn. The water requirement for the growth of corn plants during this period accounts for about 27% to 38% of the total water requirement in the whole growth period. Therefore, the soil moisture should be maintained at 70% to 75% of the field water capacity. If there is water shortage in the soil during this period, not only will it affect the differentiation of maize ear sex organs, but also it will cause bad ear development, small spikes, small grains, and severe baldness, which will ultimately lead to a reduction in yield, and a reduction in production rate of 38% to 54%. Therefore, when corn enters the booting stage, it must be poured and perfused with booting water to meet its water requirements to the maximum extent, and provide good conditions for the healthy growth of corn.
3. Timely cultivating Maize growth period, especially booting stage, requires high permeability to the soil, timely cultivating can improve soil permeability, increase soil oxygen content, reduce soil moisture evaporation, water conservation, and promote Roots under the bar, etc. have a good role in promoting. In addition, timely loose soil is also conducive to microbial activities in the soil, accelerate the decomposition and transformation of soil organic matter, while eliminating weeds, improve the growth environment of maize, and expand the growth and absorption range of the root system. The booting period should be shallow and should not be deep, 3 to 5 cm is appropriate.
4. Insect pest control Corn borer is the main pest of corn plants at booting stage. It is mainly harmful to the heart of the corn, stems, ears and tassels, light affect growth, resulting in severe stem cut and reduce production. When the field pest rate reached 10% to 15%, the application of drug control. Can be used with 1.5% phoxim granules 0.25 kg, mixed with fine soil 2 ~ 3 kg made of toxic soil, sprinkled into the heart of corn leaves, 300 can be distributed per 0.5 kg of toxic soil; or with 90% crystal enemy 100 insects 1000 to 2000 times the heart, per kilogram of liquid can be filled 66 to 100 strains; or 5% 1605 emulsion 0.55 kg, mixed with sand 50 to 100 kilograms of Sacred Heart, the amount of 4 to 5 kg per acre; or Perforated crop stalks are drenched with liquids and inserted into the ears of corn to kill insects. This method is convenient, economical, and can extend the efficacy.
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[Structure and composition]
Exfoliating foot membrane mainly by the essence of fluid, the composition of the foot protection film.
The main components
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[Benefits]
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