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China 's paddy soils shortage of silicon in serious condition the soil the silicon elements lack the main limiting factor has become a rice high and stable yield . 10 varieties of hybrid rice ( a hybrid rice varieties of early rice varieties 3 , 6 ) Middle Hybrid Rice varieties used in this assay were used to study the Lodging Resistance Traits of of liquid silicone potash grouting mature hybrid rice production and constitute a factor . The main results are as follows : 1 . Liquid silicone potash promote hybrid rice plants silicon , potassium absorption . Different application of time silicon Potassium content down 3 leaf period , down 4 leaf spray period applied can significantly with the increase stem in the Silicon content , but leaf , sheath Silicon content increase is not significant ; inverted 4-leaf stage spray the applied plant leaf , sheath , stem potassium content were significantly improved , down 3 leaf stage application effect is not significant . The dosage of the test range (0 ~ 4500mL/hm2), plant stems and leaf sheaths in silicon, potassium content increased with the increase in the amount of fertilization . The liquid silicone potash improve lodging resistance . Mainly to shorten the base of the first 1 , 2 length , increased biomass per plant and the dry weight of various organs , increase the basal unit dry weight , promote stem , sheath material output and conversion , increased fracture resistance per plant , reduce lodging index lodging capacity significantly be improved , and the dosage better 3000mL/hm2 and 4500mL/hm2 processing performance . The 3 . Liquid silicone potash may increase chlorophyll content , reduced malondialdehyde content . Different application time to pour 4 leaves of spraying effect . 4 . Spraying liquid silicone potash can significantly increase rice yield . The test results show that , the potash processing of liquid silicone hybrid rice, rice , rice yields have increased , the average yield increase of 1.65% , 6.65% , 5.75% , which Sui Ping grains and the strong increase in the rate is the main reason for the increased production . Down 4 leaf, 3 -leaf stage Shi Y Liangyou liquid silicone potash production increased by 10.88% and 9.57% , respectively . Liquid silicone the amount of potassium fertilizer in 3000 ~ 4500mL/hm2 , the highest yield Liangyou Luliangyou 996, C - 396 , respectively, an average increase of 5.40% and 4.87% . 5 best period for the the liquid silicone potash foliar spray down the 4 leaf stage , optimum dosage 3000mL/hm2 .
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