A corn anti-lodging yield-increasing regulator and its application

Abstract

The invention discloses a lodging-resisting and yield-increasing regulator for corns. The lodging-resisting and yield-increasing regulator is prepared from the following components: 200 to 400mg / L ofethephon, 15 to 35mg / L of trinexapac-ethyl, 0.1 to 0.3mg / L of 1,2,4-tributyl trithiophosphate, 0.2ml / L of active spreader and the balance of water, wherein the active spreader is Tween 20 or Tween 60.The lodging-resisting and yield-increasing regulator for the corns, provided by the invention, is applied at a flare opening early stage and a tasseling stage of the corns, and the lodging risk of the corns can be extremely reduced through reducing the internodal length of three stem nodes, close to the field, of the corns, and the mechanical strength of stalks, and the corn lodging rate is reduced and can reach 95.67 percent at maximum; meanwhile, leaf shapes and leaf inclined angles of top third leaves of the corns can be changed, the light energy utilization rate of a corn population is improved, the yield-increasing potential of the corns is improved, the thousand seed weight of the corns is increased by 5.27 to 9.12 percent, and the yield of the corns is increased by 13.73 to 18.95 percent. The lodging-resisting and yield-increasing regulator has the advantages of convenience for utilization, small dosage, low cost, safety, high efficiency, environment protection and the like, and has a wide popularization and application prospect.

Description

technical field [0001] The invention relates to a maize anti-lodging and yield-increasing regulator and an application thereof, belonging to the technical field of plant growth regulators. Background technique [0002] Lodging is a common problem in field crop production. Lodging can damage crop stalks, affect the delivery of water and nutrients from roots to leaves, and hinder the delivery of photosynthetic products to ears, resulting in huge losses in crop yield and grain quality, and great difficulties in crop harvesting. [0003] Maize is one of the important food crops and industrial raw materials, and the lodging during the growth of maize has a very serious impact on maize production. Corn lodging can be divided into root lodging and stem breakage. Root fall mainly occurs in heavy storms and rainy weather conditions before corn silking, and stem breakage mainly occurs after corn silking stage, mostly at the base of corn ears, seriously affecting Maize kernel filling...

AI Technical Summary

Problems solved by technology

At present, there are many kinds of plant growth regulators used in production, among which corn chlormequat and Kangpu No. 6 are mainly used to reduce plant height and prevent lodging, but the above growth regulators also significantly inhibit yield while inhibiting plant height. The development of the related organs ear (maize ear) and tassel (stamen) leads to a decrease in the biomass and yield of the corn population in the field. Although it has some disaster prevention and mitigation effects in the year when the wind and rain disaster occurs, but in the year without wind and rain disasters, The actual yield, efficiency, and benefits have been greatly reduced, so it cannot effectively guarantee the continuous high and stable yield of corn in this area; gibberellin, kinetin, naphthaleneacetic acid, etc. can improve stress resistance, but none of them can effectively prevent lodging

[0006] Although the anti-lodging agents or growth regulators for corn in the prior art can enhance the anti-lodging ability of corn, there are some defects, or the preparation is complicated, or they are only applicable to the northeast, Huanghuaihai corn planting areas, and are not aimed at the corn in the middle and lower reaches of the Yangtze River. The climate characteristics, variety characteristics and cultivation mode of the production area

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