The rice filling stage is a critical period for determining the yield. Field management should aim at raising the roots, preventing premature senescence, increasing photosynthetic efficiency, promoting grouting, increasing seed setting rate and grain weight. Foliar spray fertilizer is an effective way to prevent premature aging. The spraying of foliar fertilizer during rice heading grouting period can increase the photosynthetic capacity of leaves and prevent premature aging. In the grain-filling period of rice in our province, extreme weather, extreme cold, typhoon, and heavy rain are often encountered. For heading and flowering, if the daily maximum temperature exceeds 35°C for more than 3 consecutive days, high-temperature heat damage will occur, resulting in poor pollination and increase in empty grains. The daily irrigation method should be adopted in night-time irrigation or by extra-root fertilizer. Adjust the microclimate in the field, improve plant physiological functions, and mitigate the effects of high temperature and heat damage. Heading and flowering in the event of low temperatures below 20°C will slow the heading rate, causing serious necking, delayed flowering, or even flowering or closed flower pollination, and the seed setting rate will decline significantly. After a low temperature in the grain filling period, it encounters high temperatures and can cause blue-green dead seedlings. Taking measures such as timely irrigation of deep water and spraying of foliar fertilizers at low temperatures can reduce the hazards of cold temperatures and prevent the death of young plants. Foliar spray fertilizer is generally 0.5-0.75 kg per mus of urea or high-efficiency ammonium nitrate compound fertilizer, 60-75 kg of water, plus 0.1%-0.2% of potassium dihydrogen phosphate, and sprayed after 5:00 PM on sunny days. The use of high-efficiency humate foliar fertilizers such as Spring 883 and Yongye Lifeline is more conducive to improving root activity and leaf photosynthetic function, and promoting photosynthate production to grain transport. Chunquan 883 is a product of Yangquan Chunquan Biochemical Plant. It has been used in production for many years and has a good effect. Yongye Lifeline is a water-soluble fertilizer containing humic acid, which is newly introduced by Inner Mongolia Yongye Nongfeng Biotechnology Co., Ltd., has a humic acid content of 50 g/l, a total nitrogen, phosphorus and potassium content of 200 g/l, boron, zinc, manganese, The content of trace elements such as molybdenum is 10g/l, which can be balanced by 2-3 times of nutrition on the crop, enhance stress resistance, and increase yield significantly. Squid Flower,Frozen Calamar Flower,Frozen Octopus Flower,Frozen Pineapple Cut Squid Flower Zhoushan Haiwang Seafood Co., Ltd. , https://www.haiwangseafoods.com
Fertilizer Spray Prevents Premature Decay During Grain Filling Stage in Rice