新型叶面肥组合喷施对水稻产量的影响

目的]研究新型叶面肥YZS和GZS在水稻不同生育时期组合喷施对水稻产量的影响。方法]设置2个处理,处理(1)是先在分蘖期喷施YZS 750 g/hm~2,然后在孕穗期喷施GZS 750 g/hm~2;处理(2)是在处理(1)基础上,在水稻齐穗期再喷施GZS 750 g/hm~2,研究不同处理对水稻产量的影响。结果]水稻分蘖期喷施GZS 10 d后观察发现,2个处理水稻株高分别为86.5和86.3 cm,而对照株高为88.3 cm,差异极显著;根长分别为12.1和12.3 cm,对照为11.4 cm,差异显著,且处理根系数量多于对照。收获前2 d测产结果表明,2个处理有效穗数和穗粒数与对照无显著差异;2个处理结实率分别为82.72%和83.96%,对照仅为74.85%,差异显著;2个处理千粒重分别为24.77和25.80 g,对照为24.13 g,差异显著;2个处理理论产量分别为11 471.85、10 531.35 kg/hm~2,对照仅为9 662.4 kg/hm~2,差异显著。结论]YZS对水稻株高有抑制作用,但对根系生长有明显的促进作用;2种处理均显著提高水稻产量,齐穗期喷施GZS可明显增加千粒重,增产效果更明显。

Ef fects of Combined Application of New Foliar Fertilizer on Rice Yield

Objective]The effects of combined foliar fertilization of YZS and GZS on rice yield in different growth stages were studied by field experiment.Method]Treatment ① was 750 g/hm2first of spraying YZS at tillering stage and 750 g/hm2of the GZS at booting stages.Treatment② was based on the treatment①,and the GZS was 750 g/hm2in the full heading stage.Result]Ten days later after the rice tillering stage,the rice plant height were 86.5 and 86.3 cm respectively,while the contrast area was 88.3 cm, and the difference was significant.The root length was 12.1 and 12.3 cm respectively,the control area was 11.4 cm,the difference was significant,and the number of root systems in the treatment area was more than that of the control area.The results showed that there was no significant difference between the effective panicle number and the number of grains per spike in the two treatments.The seed setting rate was 82.72%and 83.96%respectively,and the control area was only 74.85 %,the difference was significant.The 1 000-grain weight of two treatments areas were 24.77 and 25.80 g respectively,and 24.13 g in the control area,which was significantly different.The theoretical yield of the two treatments were 11 471.85 kg/hm2and 10 531.35 kg/hm2respec-tively,and the control area was only 9 662.4 kg/hm2.The difference was very significant.Conclusion]YZS had an inhibitory effect on the plant height, but had a significant effect on root growth.Both of the combined treatments significantly increased the yield of rice,and the effect of the spraying of the GZS in the full heading stage was significantly increased.