In the middle and late stages of rice growth, the absorption function of roots is declining, while the ear is still in the stage of nutrient enrichment, and sufficient nutrient supply is needed. If there is a fattening process through soil fertilization, it is difficult to meet the requirements. If the nutrients are supplemented by spraying the foliar fertilizer on the roots and the rice stems and leaves are directly absorbed and utilized, the fertilizer is used less and the effect is quick. Foliar fertilizers and methods of application on rice are as follows:
Nitrogen Fertilizer High-yield rice requires early, stable, and non-fading, and cultivation is achieved by pre-promoting, central-control, and post-complementing fertilization measures. Therefore, spraying nitrogen fertilizer through the foliar surface in the late stage of rice can prolong the life of function and prevent premature aging of denitrification. Generally, 1% urea solution is sprayed once at the booting stage and at the beginning of the filling stage, and the spray effect is better when mixed with 3000-4000 times 802 conditioner.
Phosphate fertilizer Spraying phosphorus in the late growth stage of rice can increase the seed setting rate and 1000-grain weight and promote early maturity. Generally, 2% of the superphosphate solution is sprayed twice during the heading to filling stage. Preparation method: Take 2 kg of high-quality superphosphate. After pulverization, pour into 10 kg of water and soak for 24 hours (frequently stirring) and then filter, 60 kg of spray fertilizer per acre. In the nitrogen-deficient field, an appropriate amount of urea mixed spray can be added to the prepared phosphate fertilizer solution.
Potassium Fertilizer Spraying potassium fertilizer solution once in the booting stage and the heading stage of rice can promote heading and increase the seed setting rate. Take 5 kg of fresh grass and ash, add 100 kg of water, mix well and soak for 12-24 hours, then take the clear liquid for spraying. Each time, about 50 kg of spray fertilizer per mu, you can also choose 1% potassium chloride solution.
Potassium dihydrogen phosphate sprayed on rice can improve its resistance to stress, enhance heat and cold resistance, increase grain weight gain, and increase yield. Generally, it is sprayed once in the booting stage, the heading stage and the filling stage. Each time, 150 grams of potassium dihydrogen phosphate per acre, diluted with 50 kg of water and sprayed, has a significant yield increase effect. For double-night rice, when the heading is 20%, 150 g of potassium dihydrogen phosphate per mus plus 1-2 g of 920 (if it is a powder, it should be dissolved first with alcohol), and evenly sprayed with 50 kg of water to promote the uniformity of the heading and reduce The neck is necked and has a significant yield increase effect.
Zinc Fertilizer Rice is a zinc-sensitive crop. It sprays zinc fertilizer solution once at the beginning and beginning of the head, which promotes the tidying of the head, enhances the stamina of the leaves, accelerates the operation of nutrients, and is conducive to irrigation and fruiting. Each time, 100 grams of zinc sulfate per acre, diluted with 50 kg of water, sprayed. It has better effect with potassium dihydrogen phosphate and should not be mixed with phosphate fertilizer.
Boron fertilizer During the grain filling stage of rice, the supply of boron nutrients is sufficient, the seed setting rate is high, and there is less open space. Especially in the application of hybrid rice, there is a significant increase in yield. Generally, 0.1%-0.2% borax solution is sprayed once in the heading stage and the filling stage, which can increase the yield by about 10%. Spraying boron fertilizer is better when it is in low temperature and rainy weather that is not conducive to rice irrigation and fruiting. If borax is used as the foliar fertilizer, it should be dissolved with warm water first, then diluted with water and sprayed in time.
From: Farmers Daily
Nitrogen Fertilizer High-yield rice requires early, stable, and non-fading, and cultivation is achieved by pre-promoting, central-control, and post-complementing fertilization measures. Therefore, spraying nitrogen fertilizer through the foliar surface in the late stage of rice can prolong the life of function and prevent premature aging of denitrification. Generally, 1% urea solution is sprayed once at the booting stage and at the beginning of the filling stage, and the spray effect is better when mixed with 3000-4000 times 802 conditioner.
Phosphate fertilizer Spraying phosphorus in the late growth stage of rice can increase the seed setting rate and 1000-grain weight and promote early maturity. Generally, 2% of the superphosphate solution is sprayed twice during the heading to filling stage. Preparation method: Take 2 kg of high-quality superphosphate. After pulverization, pour into 10 kg of water and soak for 24 hours (frequently stirring) and then filter, 60 kg of spray fertilizer per acre. In the nitrogen-deficient field, an appropriate amount of urea mixed spray can be added to the prepared phosphate fertilizer solution.
Potassium Fertilizer Spraying potassium fertilizer solution once in the booting stage and the heading stage of rice can promote heading and increase the seed setting rate. Take 5 kg of fresh grass and ash, add 100 kg of water, mix well and soak for 12-24 hours, then take the clear liquid for spraying. Each time, about 50 kg of spray fertilizer per mu, you can also choose 1% potassium chloride solution.
Potassium dihydrogen phosphate sprayed on rice can improve its resistance to stress, enhance heat and cold resistance, increase grain weight gain, and increase yield. Generally, it is sprayed once in the booting stage, the heading stage and the filling stage. Each time, 150 grams of potassium dihydrogen phosphate per acre, diluted with 50 kg of water and sprayed, has a significant yield increase effect. For double-night rice, when the heading is 20%, 150 g of potassium dihydrogen phosphate per mus plus 1-2 g of 920 (if it is a powder, it should be dissolved first with alcohol), and evenly sprayed with 50 kg of water to promote the uniformity of the heading and reduce The neck is necked and has a significant yield increase effect.
Zinc Fertilizer Rice is a zinc-sensitive crop. It sprays zinc fertilizer solution once at the beginning and beginning of the head, which promotes the tidying of the head, enhances the stamina of the leaves, accelerates the operation of nutrients, and is conducive to irrigation and fruiting. Each time, 100 grams of zinc sulfate per acre, diluted with 50 kg of water, sprayed. It has better effect with potassium dihydrogen phosphate and should not be mixed with phosphate fertilizer.
Boron fertilizer During the grain filling stage of rice, the supply of boron nutrients is sufficient, the seed setting rate is high, and there is less open space. Especially in the application of hybrid rice, there is a significant increase in yield. Generally, 0.1%-0.2% borax solution is sprayed once in the heading stage and the filling stage, which can increase the yield by about 10%. Spraying boron fertilizer is better when it is in low temperature and rainy weather that is not conducive to rice irrigation and fruiting. If borax is used as the foliar fertilizer, it should be dissolved with warm water first, then diluted with water and sprayed in time.
From: Farmers Daily
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