Cytokinin·Uniconazole EC Influence On Rice Lodging Resistance And Yield

Wither lodging of rice, grain weight decreased, empty and unfulfilled grain rate increased,seed coat thicken, resulting in deterioration of rice quality, high field loss, seriously affecting the yield and quality of rice. Use of plant growth regulators to enhance the lodging resistance,increase production has very important significance. By a large number of previous test results,processing of 2 effective components meet the requirements of the cytokinin·uniconazole EC X and Y,on the tillering stage sprayed with different doses of the preparation and study on rice physiological indexs, lodging resistance and yield, providing a theoretical basis for rice production. The results are as follows:1. Cytokinin·uniconazole EC X and Cytokinin·uniconazole EC Y 2250 mL·hm^-2treatment can effectively improve the rice plants in protective enzyme activity, cytokinin·uniconazole EC X1500 mL·hm^-2treatment for the assimilate of content in rice plants to improve the most significant effect.2. Rice plant height and the third section stem length of caudex part was positive correlation trend cytokinin·uniconazole EC X 2250 mL·hm^-2with cytokinin·uniconazole EC Y 750mL·hm^-2dwarf quite degree, cytokinin·uniconazole EC Y 2250 mL·hm^-2for the third section stem length of caudex part shorten level best, better than cytokinin·uniconazole EC X all treatments.3. Cytokinin·uniconazole EC X 1500mL·hm^-2to enhance the effect of the fracture resistence force of the most significant, cytokinin·uniconazole EC Y 1500 mL·hm^-2for epidermis puncture force enhancement effect is the most significant.4. Cytokinin·uniconazole EC Y 750 mL·hm^-2treatment for ear length, effective panicles number increased the most significant effect,filled grains the largest increase.Cytokinin·uniconazole EC X 1500mL·hm^-2treated highest grain weight heaviest, 1000-grain number per spike the most, cytokinin·uniconazole EC X 2250mL·hm^-2with cytokinin·uniconazole EC Y 750mL·hm^-2processing 1000-grain weight rate of increase quite.Cytokinin·uniconazole EC X 1500 mL·hm^-2and cytokinin·uniconazole EC Y 2250 m L·hm^-2sprayed on rice leaves can effectively improve the rice plants on protective enzyme activity,cytokinin·uniconazole EC Y 2250 mL·hm^-2to shorten the third section stem length of caudex part is preferably,cytokinin·uniconazole EC Y 750 mL·hm^-2treatment can effectively increase yield.