Xin Guimin, Qiliying Town, Xinxiang County Q: Last year, the sowing amount of wheat was generally higher. This year due to better locust conditions, the emergence rate and the tillering rate were generally higher, and the groups were too large and growing prosperous. Preventing lodging has become a top priority for this year's wheat apology. Is the best time to prevent the lodging of wheat returning to the green stage or the jointing stage?
A: The author consulted relevant experts. According to their many years of experiments and practices, it is more ideal to control the wheat fields that are likely to be lodging, and to control them before joining the joints. It is basically impossible to take measures after jointing. Specific chemical control measures are as follows: 1. Spray paclobutrazol. 40 grams of water per acre 30 kg, foliar spray. It can make the plants dwarf and increase lodging resistance, and can also treat wheat powdery mildew. 2. Spray chlormequat. The 50-60 kilograms of Chlorella Chloride 0.2%-0.3% of wheat is used to control the internode elongation of wheat, make the plants dwarf, and the base of the stem is rough to prevent lodging. 3. Spray booster. Uses 15-20 milliliters of assistant agent per acre, spraying 50-60 kilograms of water on the foliage, which can inhibit internode elongation and prevent late lodging. 4. Spray uniconazole. In the 10-15 days before the jointing of wheat, foliar spraying with 5% wettable powder 1000 times can increase seed setting rate and increase yield. According to the data, in the absence of wind or lodging, the average application of uniconazole in wheat was 15.4% higher than the control.
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