Rice heading difficulty can be sprayed with gibberellin

It is difficult for rice to heading, or the phenomenon of neck wrapping appears. Because the rice grains wrapped in the leaf sheath can not be pollinated and fertilized in time, they will generally become empty grains, which has a great impact on the yield. There are many reasons for this phenomenon, some varieties have serious neck-wrapping phenomenon, which is more serious in adverse environmental conditions, some are improper application, such as excessive application of triadimefon before heading, it is easy to appear neck-wrapping phenomenon, the application of herbicides such as Weiba, Puma and other herbicides affect the growth of rice, and heading difficulties will also occur. Adverse environmental conditions such as low temperature at heading stage will also lead to the phenomenon of rice neck wrapping. It is difficult for rice to heading at the heading stage. Spraying gibberellin can promote heading, make the spike out in time within 2-3 days, and pollinate normally, which can effectively reduce the empty grain rate in the lower part of the panicle. Generally use 1-2 grams per mu of 920 (gibberellin preparation) plus 50-60 kg of water spray. If rice heading difficulties occur in the field, pay attention to spraying only these pieces, and try not to spray plants with normal heading, so as not to pull out the last section of these rice plants too long. Spot spray should control the dosage according to the actual spraying area to avoid excessive dosage in the local area. In addition, combined with spraying Chunquan series of foliar fertilizers, 0.1% sodium humate, 1.5% potassium chloride, 2% urea solution, etc., can enhance the photosynthetic function of leaves and improve the seed setting rate.