How to manage the wheat filling period?

Whether to irrigate wheat during grain filling depends on many factors. Good irrigation with grouting water is beneficial to further increase wheat yield. If the technology is not well mastered, it will not only lead to an increase in output, but also lead to a loss of output and a waste of water resources and human resources.

1. Look at Heaven first. That is, the precipitation during the filling period. If there is precipitation during the wheat filling period (May 10 ~ 25) and the precipitation is more than 20 mm, it is not necessary to pour the slurry. If there is little precipitation during grouting, grouting can be considered.

2. Second, look at the "ground". That is, the foundation of soil fertility, plots with high soil fertility can be irrigated without slurry water, because high soil fertility can partially make up for the relative shortage of soil moisture, and no slurry water has little effect on yield, but grouting water may lead to a decline in yield. However, plots with general soil fertility level and sandy soil with poor water retention should be irrigated with slurry water.

It depends on the species. In other words, the planted wheat varieties, such as Shimai 15, Shijiazhuang No.8 and other drought-resistant and water-saving varieties, do not need watering. For high-quality strong gluten wheat varieties, it is best not to fill grain, which is beneficial to improve grain quality. However, for some varieties, such as Shixin 733, grouting water can still increase production to some extent, so grouting water can be considered.

4. Look at "Miao" water. If the population is too large and the amount of topdressing is too large, the land with lodging risk will not be watered, because even if it affects the yield, the scope is not large. Once lodging occurs, the yield will be reduced more and the risk will be greater.

5. Transfer water because of "water". In other words, according to the previous watering times, the wheat fields that have been watered with green water, water-saving water and flowering water must not be watered again. According to our experimental results for many years, if the wheat field is watered again, the average weight of 1000 grains will drop by 3 grams and the yield will drop by 9%.

Key points of management technology in wheat filling stage

1. Supplementary application of nitrogen fertilizer. Topdressing available nitrogen fertilizer at the flowering stage of wheat (May 1 or so) has obvious effect on increasing the number of grains per spike and 1000-grain weight. The method is to water and topdressing urea 3-5 kg per mu.

Second, water the slurry in time. According to the soil moisture, irrigate grouting water timely and properly, and the watering time should be controlled within 15 days after wheat flowering. Strong gluten wheat is forbidden to be watered with wheat yellow water; Pay close attention to the weather forecast when pouring slurry, and do not water before the rainstorm to avoid lodging.

Third, foliar spraying fertilizer. In the middle stage of grain filling (mid-May), the leaves were sprayed with Sanyang amino acid with 300 times of high-purity fulvic acid and 300 times of high-purity fulvic acid, and sprayed again every 7 days to improve the 1000-grain weight, optimize the quality and prevent dry and hot wind.

Iv. integrated pest control 1. The control of powdery mildew, mainly rust, powdery mildew and scab, usually occurs in the middle and late April. If a diseased wheat field is found, spray 25% Fuquan 6000 times solution in time; Strengthen the monitoring of rust, and immediately apply pesticides to prevent and control the disease, just like powdery mildew; In order to control scab, 70% thiophanate-methyl 1000 times solution or 500 times solution of 50% carbendazim can be sprayed during wheat flowering. Susceptible varieties should pay more attention to prevention. 1. When there are 500 aphids or mites in 100 plants, use 20% Lanning 8000 times solution+1.8% Lafeng 4000 times solution or 10% Hong Qian 2000 times solution+1.8%. In the plot where midges occur, it is necessary to control the pupa stage and replenish adults around April 20. The method is: spray 50% insecticidal emulsion oil with a ratio of 1000 times along the ridge. After heading, open the wheat ridge with both hands, and when two or three adults can be seen at a glance, spray 80% dichlorvos EC with 1000 times solution to control the adults.

Fifth, timely harvest. Harvest in time in the middle and late stage of wax ripening, and carry out single harvest, single harvest and single storage for individual varieties of strong gluten wheat to prevent mechanical mixing and reduce wheat quality.