Effect Of Silion Fertilize Onlodgin Resistance Of Hihland Barley

Highland barley is the most important food crop in Tibet,and lodging is the main factor affecting the production of highland barley,which not only severely restricts the output,but also reduces the quality.As a plant growth regulator,silicon fertilizer can regulate the soil,promote the decomposition of organic matter,improve the photosynthesis of crops,and make the plant root system grow into silic ified cells to make the stalks thick and strong,so as to achieve the purpose of anti-lodging crops.So far,silicon fertilizer has been widely used in wheat,rice and other crops,but the research of silicon fertilizer on highland barley has not been reported.Based on different materials in Tibet highland barley04-2894-1,09-5024-13,12-10556,13-6927,22 and navy blue 2000 as the research material,combined with different concentrations of silicon fertilizer treatment,the adoption of morphology,physiology and anatomy analys is the difference of lodging resistance between different materials,has period from lodging in highland barley,select the best barley lodging resistance silicon fertilizer concentration.The research results are as follows:1.Studies on the effects of different silicon application concentrations on the stem folding res istance,stem strength and inverted index of highland barley show that the stem folding resistance,stem strength and inverted index of 6 highland barley materials are extremely significant in the optimal s ilicon application concentration(P < 0.01),higher than those without silicon application.During flowering,grouting and wax ripening,most of the materials showed a trend of increasing and then decreasing with the increase of silicon application concentration in each growth period,and few materials showed a trend of continuous increase,but the best silicon application concentration of each material was inhibited compared with the control(CK),and the influence was significant(P < 0.05).There was a significant difference(P < 0.05)between the increase of stem inverted index and that of(CK).2.The influence of different s ilicon application concentration on the anatomical structure of highland barley stalk showed that the ability of the area of large vascular bundles of the six materials to respond to silicon fertilizer was significantly different(P < 0.05).With the increase of silicon application concentration,compared with the control(CK),most materials showed a trend of increase and then decrease,but beyond the optimal concentration,they would be inhibited.The optimal s ilicon concentration of the six materials was higher than that of the control(CK)at different growth stages,reaching a significant level(P < 0.05).Among them,materials 09-5024-13 and 12-10556 presented a continuous increasing state with increasing silicon concentration.However,the optimal silicon fertilizer concentration had a significant effect on the area of small vascular bundle and the thickness of stem tissue(P < 0.05),which was consistent with that of large vascular bundle.With the increase of silicon concentration in each growth period,the materials also showed a trend of increasing first and then decreasing,while the excess of the optimal silicon concentration was inhibited.3.The results showed that with the increase of silicon concentration,the chlorophyll content of most materials also showed a trend of increasing first and then decreasing,and the optimal silicon concentration of each material was higher than that of the control(CK),reaching a very significant effect(P < 0.01).Among them,09-5024-13 materials were inhibited at all silicon fertilizer concentrations during grouting.Compared with cellulose and lignin,the overall ability of each material to respond to silicon fertilizer was not significantly different.4.There was no significant change in plant height between treatments with different concentrations.With the increase of silicon fertilizer concentration,the d ifference of most materials was not significant compared with that of control(CK)(P < 0.05).The second internode length was significantly affected by the silicon fertilizer,and the optimal silicon fertilizer concentration inhibited the internode length.The internode length of 04-2894-1 at 1350ml/hm2 was the shortest compared with the control(CK).Different silicon concentrations had significant effects on stem diameter.At the optimum silicon concentration,most of the materials were significantly higher than the control(CK),reaching an extremely significant effect(P < 0.01),but exceeding the optimal concentration also inhibited stem diameter.The lower the height of the center of gravity,the better the anti-lodging performance,and the influence of the height of the center of gravity between different silicon application concentrations is also significant.In the optimal silicon application concentration,the height of the center of gravity of each material decreases significantly.5.The yield of most materials did not reach a s ignificant influence change,but with the increase of silicon concentration,the yield of04-2894-1 first increased and then decreased,but was not significant.At900 ml/hm2,the yield increased significantly compared with the control group(P < 0.01).