叶面喷施归欣甲对水稻生长发育及产量的影响

Effects of Foliar Spraying Guixinjia on Growth and Yield of Rice

研究了叶面喷施归欣甲对水稻生长发育及产量的影响，结果表明，水稻返青分蘖期喷施归欣甲7d后对水稻生长发育效果最明显；当使用量达1500g，hm2时，对水稻分蘖期株高增长具有持效性；对水稻分蘖期主茎绿叶数的影响较小，当使用量迭750gmmz以上时，喷施7d后对水稻主茎绿叶数有促进作用，且表现出持效性；水稻喷施归欣甲能增加有效穗数、穗总粒数、穗实粒数，提高结实率，增加水稻产量；试验产量增加241．23~403．51kg／hm2。增幅2．52％~4．21％。

The effects of foliar spraying Guixinjia on the growth and yield of rice were studied.The results showed that the most obvious effect on the growth of rice appeared after a week of foliar spraying in tillering stage. When the usage amount of Guixinjia reached 1 500 g/hm2,there was a persistent effect on the hight increase of the rice.And there was a small affect on the number of main stern leaves in tillering stage. When the usage amount of Guixinjia was above 750 g/hm2,after a week of spraying,there was a promotion effect on the number of main stern leaves and it exhibited persistent action. The spraying of Guixinjia could increase effective panicles and the number of total grains and filled grains. It also increased kernel setting and rice grain yiled.The yields increased by 241.23~403.51 kg/hm2 and the increase was 2.52%~4.21%.