Management technology during wheat filling period, why water demand is so large

1. Supplementary application of nitrogen fertilizer: During the flowering period, 3-5kg of urea per acre can be combined with watering. 2. Pour the grouting water well: Pour the grouting water properly according to the soil moisture. If there is going to be wind and rain soon, usually do not water to prevent lodging. 3. Foliar spraying: Spraying 300 times of Sanyang amino acid + 300 times of high-purity fulvic acid on the leaves in the middle stage of grain filling, and then spraying once every 7 days can optimize the quality of wheat and increase the thousand-grain weight.

1. Management techniques during wheat filling period

1. Supplementary application of nitrogen fertilizer

Reasonable top-dressing of nitrogen fertilizer during the flowering stage can increase the number of grains per spike and increase the thousand-grain weight. , generally can be combined with watering and topdressing 3-5kg of urea per acre, the purpose is to ensure that the wheat does not age prematurely after entering the grain-filling period.

2. Pour the grouting water well

(1) Pour the grouting water properly according to the soil moisture. The watering time should end within 15 days after the wheat blooms.

(2) When watering, you need to listen to the weather forecast carefully. Watering is usually not allowed before wind and rain come to avoid lodging.

3. Foliar spray fertilizer

In the middle stage of grain filling, 300 times of Sanyang amino acid + 300 times of high-purity fulvic acid can be used for foliar spraying, and then spray again after 7 days. times, increasing the thousand-kernel weight and optimizing the quality of wheat.

4. Prevention and control of pests and diseases

(1) When controlling rust, powdery mildew, scab and other diseases, 70% thiophanate methyl 1000 can generally be used during the flowering period. times solution, or 50% carbendazim 500 times solution spray control.

(2) Common pests include aphids and midges. Aphids can be controlled by spraying with 5% beta-cypermethrin 2500 times, while midges are generally controlled from earing to flowering of wheat. Usually, 40% borericide can be used. Use 1500 times liquid spray of pine wettable powder for control.

2. Why does wheat require so much water during the grain-filling period?

1. The reason for the large water demand

When wheat enters the grain-filling period, the temperature is generally rising. , the plant's ability to conduct transpiration is enhanced, and its metabolic capacity is relatively strong. In addition, the grain filling period has the greatest impact on grain weight. If there is insufficient water or severe drought, it will directly affect grain weight and number of grains per ear. This will have a certain impact on yield, so the water demand during the grain filling period is particularly large.

2. Precautions for watering during the grouting period

(1) Plots with high fertility generally do not need to be irrigated with grouting water, while plots with average soil fertility and poor water retention are sandy. The soil needs to be irrigated with grout water.

(2) Wheat varieties with strong drought resistance and water saving generally do not need to be irrigated with slurry water. If they are conventional varieties, slurry water can generally be irrigated. However, for high-quality strong-gluten wheat varieties, it is generally best not to water.

(3) For plots where the population is too large, the amount of top dressing is too large, and there is a risk of lodging, it is generally not necessary to pour grout.