Post-disaster fertilization remedy
Remediation measures for post-disaster fertilization in northern autumn
One is rice. For plots with strong growth and green color, 0.2%~0.5% potassium dihydrogen phosphate should be sprayed on the leaves to improve the plant's resistance to stress. For the field where the growth is weak, the leaves are yellow-green, and the signs of lack of fertilizer appear, the urea is applied 5~7 kg, and the foliar fertilizer such as potassium dihydrogen phosphate or organic water-soluble fertilizer is sprayed regularly.
The second is dryland crops such as corn and soybeans. Generally, the affected land does not need to be fertilized. Under special circumstances, such as land with serious water, because of nutrient loss, corn can be supplemented with 5 kg of urea per acre to prevent insufficient supply of nutrients in the later period. Soybean supplemented with phosphorus and potassium fertilizer, spraying foliar fertilizer such as potassium dihydrogen phosphate or organic water-soluble fertilizer.
Remediation measures for post-disaster fertilization in southern late rice
The first is to regulate the amount, structure and proportion of fertilization in late rice. Increase the amount of fertilizer, and advance some of the ear fertilizer to the tillering stage to promote early fast-growing, prevent early ear, strive for sufficient effective ear, increase the proportion of potassium fertilizer application, and increase the seed setting rate and grain fullness. On the basis of the total planned fertilization, the late rice will be applied with about 10 kg of formula fertilizer per acre (N:P:K=20:10:15).
The second is to spray foliar fertilizer. From the beginning of the booting stage to the heading and poplar stage, 100 grams of potassium dihydrogen phosphate (diluted to 0.2% by water) or organic fertilizers containing trace elements of boron, such as foliar fertilizer, is sprayed twice per acre for 7 days. To promote pollen germination. Foliar application time is best carried out in the windless evening and cloudy days to facilitate crop absorption. Do not spray on rainy days, strong winds, or dry sunny days at noon and rice blossoms.
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