Summer corn field management comments

(I) Timely cultivation and topdressing to meet nutrient demand. During the jointing stage to the small bell-mouth period (6 leaf exhibition to 10 leaf exhibition), fertilization was carried out in combination with cultivator. Through the cultivator, the wheat stubble is rotted and weeding. Topdressing mainly N fertilizer, do not spread on the surface, should be concentrated near the root hole or after the application of deep cover soil, increase fertilizer utilization, prevent burning seedlings.
(2) Draining and irrigation in time to prevent floods and droughts. During the whole breeding period of maize, the seedlings are resistant to drought and drought. In case of heavy rain, water must be drained in a timely manner to prevent buds and shoots sprouting. From booting to filling, there is a large demand for water, which is more tolerant but not water-deficient. Drought should be promptly irrigated. One or two irrigations during this period can significantly increase corn production.
(c) Strengthen field management to prevent falling production. Lodging, especially the lodging in the middle and late stages, is the main factor limiting the increase in corn production. In the case of planting densely-tolerated plants with lodging resistance, rational dense planting, reasonable fertilization, cultivating soil in medium tillage, and timely removal of small and weak empty plants, if a site with excessive density and a serious risk of lodging is discovered, plant growth regulators can be sprayed in advance. , For example, spray 50% of Chlorhexidine Hydrochloride 200 times before the booting and prevent it.
(D) prevention and control of pests and diseases to prevent pests and diseases. The main diseases in summer corn are leaf spot, stem rot (blight), and dwarf mosaic disease. The main pests are corn borer, armyworm, cotton bollworm, aphids, underground pests, and thrips. Through forecasting and prediction throughout the country, prevention and control are strengthened.
(e) harvesting in due course, quality and quantity. When corn plants mature normally, the temporal lobe is gradually dry and loose, and the “dairy line” of the grain disappears. The base layer forms a black layer, which shows the unique luster of the grain. The moisture content is generally around 30%. The current widespread problem is premature harvest, high moisture content, low bulk density, mold, damaged grains, poor product quality, not only affect the yield, but also affect the quality. To wait until the corn is fully ripe, at least wait until the ear is completely puffy and harvested. Appropriate late harvest will benefit maize production and quality improvement. At the same time, we must master the relationship between timely planting of wheat.
Maize corn expert guidance group July 28, 2006

The garden pansy is a type of large-flowered hybrid plant cultivated as a garden flower. It is derived by hybridization from several species in the section Melanium ("the pansies") of the genusViola, particularly Viola tricolor, a wildflower of Europe and western Asia known as heartsease. Some of these hybrids are referred to as Viola wittrockiana Gams ex Nauenb. & Buttler. For simplicity, the older name Viola tricolor var. hortensis is often used.

The garden pansy flower is 5 to 8 centimetres (2 to 3 in) in diameter and has two slightly overlapping upper petals, two side petals, and a single bottom petal with a slight beard emanating from the flower's center. These petals are usually white or yellow, purplish, or blue. The plant may grow to 23 cm (9 in) in height, and prefers sun to varying degrees and well-draining soils.

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