植全叶面营养液对水稻的增产效果及其机理

在水稻生育后期喷施植全叶面营养液500倍稀释液1-2次,可增产稻谷8.6%-16.3%,每 hm~2增产稻谷458.0-931.5kg.增产效果均优于叶面宝.增产菌、百富农、碧全等叶面肥.在氮肥施用量少的情况下,增产效果更佳.植全叶面营养液喷施浓度500-800倍稀释液均可取得明显增产效果.以水稻分蘖期、破口期和齐穗期喷施植全叶面营养液增产效果最好;破口期、齐穗期喷施肥效与3个时期喷施无显著差异,但经济效益高、喷施植全叶面营养液还能促进水稻根系生长,提高根系活力,扩大叶面积,提高叶片叶绿素含量,增强光合作用,提高光合势,使光合产物增加,且能提高叶片 ATP 酶活性,增强新陈代谢,有利光合产物运转及其在谷粒中累积,因而会提高水稻结实率和千粒重,使产量明显提高.

The Effect of Zhiquan Foliar Nutrient Solution on Rice Yield and Its Mechanism

Spraying Zhiquan foliar nutrient solution diluted in a ratio of 1:500 during the late growing pe- riod of rice raised the yield by 8.6%-16.3% and 458-931.5 kg per hm~2.The yield increase effect of the Zhiquan was better than that of other foliar nutrient solution,such as Yemianbao,Zengchanjun,Baifunong, Biquan,and was much better when N application was low level.The yield was significantly raised when the Zhiquan was sprayed in a dilute ratio of 1:500-1:800.The highest yield was achieved when the Zhiquan was spsayed three times at tillering,near upon heading stage and full heading stage,but no significant difference of rice yield was found when the Zhiquan was sprayed two times at near upon heading and full heading stage so that the economic effect was better.Spraying the Zhiquan on rice stimulated the growth of roots,increased the root activity,enlarged the foliar area,increased the content of chlorophyll of leaf,strengthened the photosynthesis,increased the potential of photosynthesis and the photosynthate.It also increased the ATPase activities of leaf,strengthened the metabolism,promoted the transporation and accumulation of the photosynthate.As a result,the ratio of seeding and the weight per thousand grains were ineseaed and the yield was raised.