Four Key Points about Rice Fertilization
First, we should pay attention to the application of organic fertilizer. Organic fertilizer contains various nutrients, which can improve the characteristics of soil ventilation, fertilizer absorption and water retention, promote the steady growth of rice plants, and obtain high yield and good quality. Organic manure is mainly used as base fertilizer, with 40 kilograms of rotten soil and 40 kilograms of cake fertilizer per mu, and 40 tons of human and animal manure before ploughing and watering.
Second, we should pay attention to controlling nitrogen fertilizer. Excessive application of nitrogen fertilizer to rice will not only increase ineffective components, turn green, lodge, aggravate diseases and insect pests, lead to more empty chaff grains, decrease seed setting rate, and affect rice yield. Nitrogen fertilizer is mainly used as topdressing. For the first time, 7kg of urea was applied per mu after rice planting, and the second was combined with ploughing 15 days after planting, and 5kg of urea was applied per mu to promote strong tillers. In the middle stage, attention should be paid to drainage and fertilizer control, and only some balanced fertilizer should be applied to the second and third types of seedlings with poor growth, and in the later stage, the seedlings should be supplied with 3Mel 4kg of grain fertilizer.
Third, we should pay attention to the application of phosphorus and potassium fertilizer. Phosphorus and potassium fertilizer can enhance plant vitality, promote nutrient synthesis and transport, strengthen photosynthesis, prolong the functional period of leaves, make grains full and increase yield. Phosphate fertilizer is suitable for base fertilizer, and potassium fertilizer is better for topdressing. In the fields with sufficient organic fertilizer, the basal application of phosphate fertilizer is 20ml / mu, and potassium chloride is 3.5 / mu and 5kg / mu before tillering. Spraying phosphorus and potassium fertilizer in the later stage of rice can promote grain filling and fruiting. It was sprayed once at the late stage of heading and flowering stage and at the filling stage, with 50m / mu of phosphorus and potassium fertilizer of 100g / mu and 50m / m of water of 60kg in the evening.
Fourth, we should pay attention to the application of micro-fertilizer. Zinc fertilizer and silicon fertilizer can not only improve the oxygen supply of rice roots, enhance the stress and lodging resistance of rice plants, improve the disease resistance of rice plants, promote root development in the later stage, prolong the functional period of leaves, and prevent premature senescence, but also accelerate flower development and increase the number of pollens. Promoting flower germination is beneficial to improve the panicle rate of rice, but also promote large grains per panicle, increase seed setting rate and grain plumpness, and increase rice yield.
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What are the regions of rice production in Guangdong? What are the characteristics of each?
Guangdong Province is bordered by the Nanling Mountains in the north and the South China Sea in the south. Rice is grown in vast areas ranging from tidal fields at flat sea level to mountain terraces thousands of meters above sea level. Guangdong has a monsoon subtropical and tropical climate. The safe growth period of rice is 220-280 days in most places. The rice cropping season is long, such as early rice in Guangzhou, sowing in early March and harvesting in mid-July; typical late rice varieties are sown in late June, heading around October 10, and harvested in mid-November. The rainfall is abundant and the sunshine hours are long. All these conditions are beneficial to the growth of rice.
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Introduction to the four disadvantages of rice Honda management
The main results are as follows: 1. The soaking time of soil preparation is short, bumpy and enlarged, transplanting seedlings without soaking thoroughly, discharging salt and washing alkali is not thorough, it is easy to produce salt damage, which is disadvantageous to the growth and development of seedlings. 2. This year, there are many windy days, cloudy days and large temperature difference, which leads to the seedlings can not be ventilated normally, which is disadvantageous to slow down the seedlings after planting. 3. People are more afraid of water. Transplanting rice seedlings in deep water and deep water management are disadvantageous to raising ground temperature, taking root early, early seedling emergence and early tillering after transplanting. 4. The water storage in last winter and this spring has poor water quality and heavy soil salinity, which makes the living environment of rice disadvantageous.
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