The reporter learned from the Provincial Department of Agriculture that in the near future, the Provincial Department of Agriculture organized five expert inspection teams to conduct on-the-spot inspections of the current corn production, key technology promotion and application of high-yield production in 15 cities of our province, and convened corn production in the province. Situation experts discuss the meeting. Summarizing expert opinion, combined with the current status of corn growth, the expert group put forward five measures for the management of summer maize in the middle and later stages to ensure the high yield of summer corn in our province.
First, pay close attention to weather changes and timely respond to disasters. More recent rainfall, we must promptly clear the drainage system in the field to ensure that the middle and late corn drainage smooth, timely drainage after the rain. This year's sowing is relatively late this year. Maize has a high temperature at seedling stage, fast growth, fine plants, and poor lodging resistance. In case of disasters such as floods or windstorms, lodging will be caused. Loose lands are prone to lodging, and cultivators can adopt cultivators. Measures to promote aerial root development and improve plant resistance to lodging. In the later period, lodging should be promptly started.
Second, pay close attention to corn pollination, and take timely response measures. Strengthen field management at the grain-blasting stage, remove small and weak strains early, and improve ventilation and light transmission conditions in the field. High-yield fields can carry out artificial castration and assisted pollination. In the event of continuous rain during the flowering and pollination of Daejeon corn, it is necessary to adopt artificially assisted pollination and other remedial measures to effectively improve the seed setting rate and strive to increase the number of grains per ear.
Third, to strengthen the management of fertilizer and water in the later period to prevent premature aging of corn. Emphasis should be placed on the application of flower-bearing fertilizers, and nitrogenous fertilizers should be applied at the flowering stage to increase the photosynthetic efficiency of the leaves and extend the functional period of the leaves. In the grain filling stage, 15% to 20% of total nitrogen is applied, and about 7.5 kg of urea can be applied per acre. The high-yield off-season farmland raises the ratio of nitrogenous fertilizer in the later period, the flowering grain fertilizer increases to about 30%, and about 15 kilograms of urea can be applied per acre. When applied, it can be combined with watering or flooding before rain to increase fertilizer efficiency.
Fourth, strengthen the monitoring of pests and diseases and timely control of pests. The panicle stage is the peak period of many kinds of pests, and there are still many kinds of pests and diseases in the flowering stage. It is necessary to do a good job of monitoring and forecasting and timely prevention and control. Control curvularia leaf spot can be used 50% chlorothalonil, 50% carbendazim, 70% thiophanate-methyl 500 times spray; large spot can be used 40% ketamine powder, 50% carbendazim, 75% generation MMX and other chemicals 500 to 800 times liquid spray. Brown spot can be controlled by 50% carbendazim, 70% thiophanate 500 times spray. Rust can be used 20% Trifenin EC per acre 75 to 100 ml spray control. The ear of corn can be used 90% trichlorfon 800 times drop irrigation control. The corn borer can be sprayed with 50% for 8 to 10 grams per mu, or 10% imidacloprid per acre for 10 to 15 grams of water plus 45 kilograms of spray control. Three generations of armyworms can be sprayed with 50% phoxim 1000 times spray.
5. Vigorously promote proper late receipts to ensure normal maturity. Due to the late planting of corn this year, the growth period has been postponed, and the time for grain development has been insufficient. Appropriate late harvest has a particularly important role in increasing grain weight and ensuring yield. All localities must be widely publicized so that the peasants can fully understand the importance of proper late harvest of corn. If the situation does not affect the sowing of wheat, it should be collected as late as possible to ensure the corn yield. This year's harvest time should be concentrated around October 1, high-yield harvest field harvest in early October, the general field at the end of September, early October harvest. Vigorously promote joint harvesting of corn and improve the quality of machinery operations. Straw crushing should not exceed 10 cm in length and should be uniformly distributed.
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