Improve wheat seed setting rate and yield
隐藏域元素占位
Improve wheat seed setting rate and yield
Application of regulators to improve wheat seed setting rate and yield
Triacontanol
The foliar spray is applied from the booting stage to the grain-filling stage of wheat, and the spraying effect is the best during the floret differentiation stage. 0.5mg/L triacontanol can increase the number of grains per panicle, 3.8 grains per panicle, and can significantly increase the number of secondary roots and plant height per plant. content, enhance photosynthesis, and then promote wheat flowering and fruiting. If it is used after heading to the grain filling stage, it can also promote ripening. Compared with the control group, the wheat after spraying matures 2 to 3 days earlier, and the concentration range of 0.5 to 1 mg/L can increase the seed setting rate of wheat and increase the yield by 10% to 10%. 12%, if the concentration exceeds 2.55mg/L, the 1000-grain weight and yield of wheat will decrease, and if the concentration is lower than 0.1mg/L, the wheat yield cannot be increased.
Sodium Nitrophenolate
Spraying sodium nitrophenolate at the heading stage and grain filling stage of wheat can increase the seed setting rate, reduce the empty seedling rate, increase the 1000-grain weight and increase the yield. The application concentration of 1.4% sodium nitrophenolate at 6-16 mg/L had the best effect on increasing wheat yield, and it was advisable to spray once before heading and before full heading.
Sodium naphthalene acetate
20～30d after transplanting the seedlings, spray the flag leaves and panicle with 15～30mg/L liquid medicine, which can promote tillering, increase the rate of ear formation, increase the number of grains per panicle and 1000-grain weight, and promote the increase of yield.
Ascorbic acid
Spraying 30mg/L ascorbic acid liquid on the wheat booting stage can improve the effective tillering rate, ear formation rate, 1000-grain weight of wheat, and increase the yield by 15% to 30%, and the effect is remarkable. At the same time, it can improve the immunity of wheat, show special effect against powdery mildew, and the average control effect on wheat powdery mildew is over 85%.
Kinetin
Spraying 25-50 mg/L kinetin at jointing stage, flowering stage and 10 days after flowering can significantly increase the number of grains per ear and 1000-grain weight of wheat, thereby significantly improving grain yield.
6-BA
Spraying with 10-30mg/L6-BA at the grain filling stage can improve the photosynthesis of wheat, promote the accumulation of dry matter and its distribution to grains, slow down the adverse effects of waterlogging on yield formation, and promote stable and increased yield.
P-Chlorophenoxyacetic acid
During the grain filling period of wheat, spray 25kg of 60mg/L p-chlorophenoxyacetic acid solution per mu, which can effectively defend against dry and hot wind, increase thousand-grain weight and promote yield.
S-allocin
Spraying 2 mg/L liquid medicine at the turning green stage can significantly promote the growth of wheat tillers and secondary roots; spraying 12.5 mg/L liquid medicine at the booting stage of wheat can greatly increase the yield of wheat.
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