Autumn disaster-resistance technology for corn and rice
Affected by the disaster weather, the growth period of China's crops has been postponed this year, increasing the risk of early frost and cold dew exposure for food crops such as summer corn and mid-late rice. At a time when the production of autumn grain production is in a critical period, it is necessary to pay close attention to weather changes to prevent early frost and cold dew winds as the focus, promote growth, promote early maturation, enhance the physiological activity of roots and leaves, promote grain growth, increase grain weight, and ensure a good autumn harvest. .
Corn promotes early maturing
One is pouring a good grouting water to prevent drought. As the saying goes, "Spring drought is not a drought, and half of autumn drought is lost." In September, some parts of the country are prone to drought in the fall, and the lack of water supply will affect the grouting process. The number of grains will be reduced and the grain weight will be reduced, which will directly lead to a reduction in production. It is advisable to water at the end of corn ripening, ie, 7-10 days before harvesting, and the amount of water should not be too large to prevent lodging. If there is heavy rain, check the Tian Qing Ditch immediately after the rain, eliminate the waterlogging in the field, and prevent damage.
The second is the early removal of empty stalks, diseased plants and dead spikes. Immediately after corn booting, the empty stalks and diseased plants must be completely removed, and the cleared head smut strain should be taken out of the field and buried deeply. This can improve the conditions of ventilation and light in the field, reduce fertilizer consumption, which is conducive to the normal growth and development of plants, and promote the formation of large spikes.
The third is to put autumn and ridge spray fertilizer, and actively promote early maturing. Although the early frost period has obviously shifted back in recent years, this year's sowing delays and the corn growth time is limited. In the middle and late August corn filling stage, measures such as laying autumn ridges, spraying potassium dihydrogen phosphate, dipping small sticks, and hitting the bottom leaves were adopted. Can effectively improve the group ventilation and light conditions, reduce nutrient consumption and promote early maturation and high yield.
The fourth is to protect the top of the leaves, appropriate late receipt. In the final stage of corn wax, avoid cutting the top of the leaves, drying the standing poles, drying the grains, speeding up the dehydration rate of the seeds, promoting the early maturity, and improving the quality of the corn. The water can be reduced by 3% on average and the yield can be increased by 5%. When the corn husk leaves dry loose, the grain becomes hard and shiny, the milk line disappears, and the black layer appears at the base, it should be harvested in time. Pay close attention to the changes in the weather, cut the corn stalks in 1~2 days before the early frost, put them on the harvest and promote post-harvest.
Rice promotes early maturing
The first is timely irrigation. Remove the weeds in Tanabe, Ikechi, and fields, improve the ventilation and light conditions of rice, and increase the ground temperature and water temperature. Pay close attention to changes in the weather, early frost or cold dew wind 1 to 2 days before the return of irrigation water 3 inches deep, can increase the soil temperature 2 °C ~ 3 °C, the field air humidity increased by 20% ~ 30%. The depth of irrigation is controlled according to different conditions. The wind is large, there is no sunlight, and the water at night is deeper. During the day, the sun may be lighter, or it may remain moist. Immediately after the morning frost or cold dew wind should be drained to expose the field, to avoid rooting and cause the culm leaves become soft and reduce the ability to resist cold.
The second is artificial water spray. During the early frost or cold dew during the morning of 9 o'clock in the morning before rice flowering and at 3 o'clock in the afternoon, the water sprayed after the flower was received, increased the humidity between the plants, eased the cooling rate, reduced the transpiration of the leaves, and adjusted the climate in the field, which was conducive to grouting and improved the seed setting rate. 5 %~10%. It is necessary to insist on spraying water every day until the temperature rises, and it is advisable to spray the wet leaves. In the northeast area, plots with late growth periods and low-lying plots must be provided with sufficient firewood to prepare for smoke and frost protection.
The third is to apply anti-wind fertilizer in a timely and accurate manner. For weaker growth and poorly rejuvenated seedlings, a few days before the cold wind exposure, appropriate nitrogen fertilizer should be applied to improve the efficiency of photosynthesis, enhance resistance, and reduce the phenomenon of neck-wrapped. The application of potassium dihydrogen phosphate or ninety-two in a timely manner after the cold dew is needed to speed up the progress of heading and reduce the necking phenomenon. Generally, the heading period can be advanced by about 3 days, and the seed setting rate can be increased by 5% to 8%. After the cold dew, the fertilizer will be promptly rejuvenated to restore the vigor of the rice plant, promote grouting, and ensure that the grain is full. In addition, it is necessary to apply pesticides and prevent diseases in a timely manner to avoid the loss caused by the spread.
The fourth is to cut off water in a timely manner. When late rice is open, late rice is used to gently sweep the panicle for artificial pollination. When the rice is ripe, it should be drained and drained in due course. Generally, water should be cut off 7 to 10 days before harvest to achieve harvesting in dry fields.
Insect net greenhouse also known as plant and vegetables greenhouse net. Used for prevent the insect fly into the greenhouse during the plant growing, and cover the plants. Key off the approaches that the pests (adult insect) breeding. Effective control of the spread of all kinds of harmful pests spread, such as Cabbage caterpillar, diamondback moth, aphids, flea beetles, Sweet agnates, American leaf miner, literal etc and prevent the harmful of virus spread. Significantly reduced the use of chemical pesticides, so that the planting vegetables good-quality and health.
Greenhouse Insect Net,Insect Mesh Netting,Insect Mesh
JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , http://www.spgreenhouse.com