The best time to prevent wheat from lodging is the returning stage or the jointing stage.

Yang Guimin, Qiliying Town, Xinxiang County: Last year, the amount of wheat planted was generally higher. This year, due to better sensation, the emergence rate and tillering rate were also generally higher. The group was too large and the growth was prosperous. Preventing lodging has become a top priority for this year's wheat apology. Is the best time to prevent wheat from lodging in the greening period or the jointing stage?

A: The author consulted relevant experts. According to their years of experimentation and practice, it is ideal to control the wheat fields with lodging potential after the jointing, and the measures taken after the jointing are basically preventive. The specific chemical control measures are as follows: 1. Spray paclobutrazol. 40 grams per acre of water 30 kg, foliar spray.

The plant can be dwarfed, the lodging resistance is enhanced, and the wheat powdery mildew can be cured.

2. Spray chlormequat. When the wheat is raised in the period of 0.2% to 0.3%, the chlormequat solution is 50-60 kg, which can effectively inhibit the elongation of the wheat internodes, make the plants dwarf, and the base of the stem is thick and hard, thereby preventing lodging.

3. Spray the helper. 15 to 20 ml per acre, and 50 to 60 kg of water on the foliar surface can inhibit the elongation of the internode and prevent the lodging from falling.

4. Spray uniconazole. Foliar spraying with 5% wettable powder 1000 times solution 10 to 15 days before wheat jointing can increase the seed setting rate and increase the yield. According to the data, in the absence of wind and no lodging, wheat with uniconazole increased yield by an average of 15.4% compared with the control.

The best time to prevent wheat from lodging is the returning period or the jointing stage.

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