In May, good management of wheat fields is a good opportunity to create high yields. This period is the key period for wheat heading, flowering and filling, and it is also the most important stage for wheat to accumulate nutrients, increase grain weight and form late yield. Doing a good job in field management during this period is an important task for high yield.
First, timely topdressing
This period is the final formation period of wheat grain formation. 80-90% of the carbohydrates in the grain are also formed during this period, which is large in nutrient consumption. If the water and fertilizer supplement is insufficient, it will result in insufficient grain filling and insufficient fullness. The granulation is not true, and the high yield in the later period is not guaranteed. At this stage, timely watering and fertilizer should be taken to prevent premature senescence of the plant, and provide adequate nutrition for smooth grain filling, full development and increase of single grain weight.
Method of operation: When the wheat is filled, it can be combined with 3-5 kg ​​of urea (nitrogen fertilizer) per acre of watering in the wheat field.
Second, foliar spray fertilizer
With the maturity of the ripening period, the root absorption function and leaf photosynthesis ability of wheat will be gradually weakened, and the physiological resistance ability of the plants will gradually decline. It is prone to pests, lodgings or dry hot winds, and can be sprayed through the foliage. The way is to quickly supplement the nutrition of wheat, prolong the functional period of photosynthesis of leaves, improve the ability of organic matter production, improve the resistance of plants, provide sufficient nutrients for the full development of wheat grains, increase single grain weight and increase yield.
Method of operation: In the initial stage of wheat filling, spray 200 g of potassium dihydrogen phosphate + 500 g of urea + 50 kg of water per acre, spray once every 7-10 days, spray twice, and avoid it when spraying. High temperature and windy weather at noon, try to choose in the evening. Another thing to note is that if the wheat is lodging, don't artificially support it!
Third, pest control
During this period, wheat is prone to outbreaks of pests such as thrips, aphids, midges, scab, powdery mildew, rust, leaf blight, etc., which have a very serious impact on the full development of wheat grains and the increase of 1000-grain weight, which should be given special attention.
Method of operation: In order to improve the control effect on the basis of reducing the artificial input, it can be sprayed with 70% imidacloprid + 450% anti-carbocarb + 4.5% beta-cypermethrin + 12.5% ​​diniconazole + 25% tebuconazole (or 20% three Oxazolone + 50% carbendazim) + 25% benzepazole emulsifiable concentrate + 5% jinggangmycin (or 20-mycelium) + 98% potassium dihydrogen phosphate + 0.01 brassinolide, sprayed with water .
have to be aware of is:
1 Fertilizer should be added in strict accordance with the order of foliar fertilizer, wettable powder, suspending agent, water agent and emulsifiable oil. After adding a kind of fertilizer, it should be thoroughly stirred and mixed to observe no abnormalities such as bubbling, turbidity and flocculation. And then add the next blend;
2 When spraying, it is necessary to ensure uniform and comprehensive spraying, no heavy spray, no leakage, and pay attention to the dosage and concentration of the medication.
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