Spraying foliar fertilizer for high yield of growing wheat

Wheat enters a critical period of yield formation after flowering. Spraying foliar fertilizer from flowering to filling stage can effectively improve yield and quality.

I. spraying method

1. Spraying multi-dimensional potassium dihydrogen phosphate with 99.5% multidimensional potassium dihydrogen phosphate per mu with 100 grams of multi-dimensional potassium dihydrogen phosphate, spraying 30 kg of water evenly, once a week, spraying 2 to 3 times in a row, can increase grain size, gain weight, promote grain filling, improve wheat disease resistance and lodging resistance, prevent dry and hot wind in the later stage, and promote precocious maturity.

2. Spray plant ash leaching solution to take 10kg of fresh plant ash that has not been drenched in rain, add 100kg water to stir fully, soak 12Mel for 14 hours, take its clarification solution to spray, such as adding 2% superphosphate leaching solution mixed spray effect is better. Generally, spraying 2 to 3 times at intervals of 7 to 10 days can not only increase nutrients and promote grain fullness, but also have good disease and insect resistance and lodging prevention.

3. Spray biogas slurry from the biogas digester after anaerobic fermentation for more than 45 days, then spray it with pure biogas liquid after 2ml for 3 days, the dosage is 30kg per mu, and add appropriate amount of water to dilute it when the temperature is high, so as to avoid the increase of concentration caused by evaporation and burn leaves. Generally, spraying more than 3 times every 7 to 10 days can play a good role in preventing lodging of strong stalk, increasing yield, improving quality, disease resistance and insect control.

4. boron spraying wheat at flowering stage used 75-125g borax per mu and diluted to 50-75kg foliar spray with water, which could accelerate floret development, promote pollen tube extension, increase seed setting rate and 1000-grain weight.

II. Points for attention

1. Try to be uniform when spraying, and it is better to keep the leaves moist and not dripping. The appropriate time is before 9: 00 a.m. and after 4: 00 p.m., especially from 4: 00 p.m. to 5: 00 p.m. For the wheat fields with heavy de-fatting and poor soil moisture, or when there is a dry and hot wind during the fertilizer spraying period, the frequency of fertilizer spraying should be increased as appropriate. In wheat fields with diseases and insect pests, pesticides can be added to the fertilizer solution to treat both. Fertilizer spraying in flowering stage should stagger the two peak periods of flowering from 9 am to 11:00 and from 3 pm to 6 pm, otherwise the pollen tube will burst due to water absorption, affecting fertilization and fruiting, resulting in a reduction in yield.

2. Plant ash must be fully soaked so that the effective ingredients can be completely dissolved in water in order to give full play to its yield-increasing effect.

3. If there is rain within 12 hours after spraying fertilizer, it should be sprayed after the weather is fine.