High temperature rice field management technology
Now, it is the jointing stage of rice, and in the case of high temperature, rice will inevitably have various diseases. For this reason, if you want high yield of rice, you need to do field management techniques. How should rice management in the Yangtze River Basin be managed in the field? At present, the middle japonica rice in the middle and lower reaches of the Yangtze River has entered the jointing stage one after another, and the middle japonica rice in some rapeseed meal and early gully has been in the jointing and booting stage, the first season of japonica rice is in the tillering stage, the double-season late rice is in the seedling stage, and the southwestern part is in the higher season. Indica rice is in the stage from the booting stage to the beginning of the ear, and in the lower season, the indica rice gradually enters the stage of flowering and filling. According to the forecast of the Central Meteorological Observatory, in the next 10 days, the Jianghuai, Jianghan, Jiangnan, and the eastern Sichuan Basin will have a high temperature of 35-37 °C for 4-7 days. The highest temperature in some areas can reach 38-40 °C. In response to the current climate and rice growth characteristics, the Rice Experts Group of the Ministry of Agriculture and Rural Affairs, together with the National Agricultural Technology Extension Service Center, put forward technical opinions on rice field defense high temperature management in the Yangtze River Basin. 1. Adjust the temperature with water to prevent high temperature and heat damage For the mid-season of tillering to jointing stage, the physiological cooling ability of the plant itself should be exerted. The 2-4 cm water layer and the wet and dry alternate gap humid irrigation should be carried out; the mid-season rice from the booting to the flowering stage should last for more than 35 °C. In high temperature weather, the field should maintain 8-10 cm water layer, reduce the temperature of the canopy and the leaves, and if necessary, spray and cool with water before and after noon; For drought-stricken areas, it is necessary to actively divert water and timely replenish water to improve irrigation efficiency and promote rice growth and development. For double-season late rice paddy fields, water management should be strengthened. Where conditions permit, daily irrigation can be adopted to accelerate water circulation and regulate temperature. Promote the steady growth of seedlings and ensure the water for transplanting. 2. Apply panicle fertilizer to enhance plant resistance For the field with suitable stem number and normal leaf color, the panicle fertilizer was applied twice in the inverted 4 leaf and the inverted 3 leaf stage, and the nitrogen application rate was 40%-50% of the total nitrogen application rate. The variety is 30%-40%; for the field where the number of stem stems is small and the leaves are yellow and yellow, the nitrogen application rate is increased by 10%-30%, which is weak and strong; For the field where the number of stems and stalks is too large, and the color of the leaves is deep and scattered, it is applied or not applied at the down 3 or 2 leaf stage. For the area where the ratoon rice is accumulated, after the rice in the first season 10 kg of urea was applied in about 10 days to promote the regeneration of regenerated shoots. 3, foliar spray fertilizer, alleviate the impact of high temperature For the first season of reclaimed rice or a mid-season rice that is heading to heading, after high temperature, foliar spraying of phosphorus and potassium fertilizer can be adopted, and the leaf surface is generally treated with 0.2% potassium dihydrogen phosphate solution or 3% superphosphate solution. Spraying, enhance the ability of rice to resist stress, reduce high temperature hazards, promote grain filling, increase seed setting rate and 1000-grain weight; for fields with particularly low seed setting rate in the later stage, if post-crop crops allow, nitrogen fertilizer can be properly applied to promote low-node dormancy The buds are divided into ears to make up for the loss of yield. This article URL: High-temperature rice field management technology Animal Gummy Candy, Sweet Gummy Candy,Sour And Sweet Gummy Candy,Chewy Gummy Candy Montreal Shantou Food Co., Ltd , https://www.montrealsnack.com