腐熟玉米秸秆对早熟禾生长的影响

Effects of Maturity Corn Straw on Growth of Poa annua L.

[目的]用腐熟玉米秸秆改良的土壤栽培早熟禾(Poa annua L.),研究其对早熟禾生长的影响。[方法]试验共设3个处理和1个对照(CK),T1为腐熟玉米秸秆∶园土1∶2,T2为腐熟玉米秸秆∶园土1∶3,T3为腐熟玉米秸秆∶园土1∶4,CK为草炭:园土1∶3。生长量指标包括株高、叶片宽度及日均生长量,生理指标包括叶绿素含量、过氧化物酶(POD)活性、可溶性总糖含量及蛋白质含量。[结果]秸秆型基质上种植的早熟禾的植株质量、叶绿素含量、可溶性糖含量、可溶性蛋白含量及POD活性均明显高于对照,这说明腐熟玉米秸秆对其生长有促进作用,且促进作用从大到小依次为处理T2>处理T1>处理T3。[结论]腐熟玉米秸秆与园土以1∶4进行配比最为合理,其植株的质量、叶绿素含量、可溶性糖含量、可溶性蛋白含量及POD活性均与对照接近,且略优于对照,草坪质量更佳,且能减少建坪成本,又不会增加后期草坪管理工作的负担,符合大量生产的实际要求。

[ Objective ] The purpose was to cultivate Poa annua L. using soil modified by maturity corn straw, and study its effects on growth of Poa annua L.. [ Method] Three treatments and one control（CK） were designed, thereinto, maturity corn straw： garden soil was 1 ： 2, 1 ： 3, 1：4 in T1, T2, T3 treatments resp. , and peat： soil was 1：3 in CK. Mass growth included plant height, leaf width and average daily mass growth, physiological indices included chlorophyll content, POD activity, soluble sugar content and soluble protein content. [ Result] Plant＇s quality, chlorophyll content, soluble sugar content, soluble protein content and POD activity of Poa annua L. cultivated on substance com- posed by corn straw were very significant higher than CK, showing maturity corn straw had promoting function on it, and this function＇s se- quence was in order： T2 〉 T1 〉 T3. [ Conclusion] In this paper, maturity corn straw can replace peat used for Poa pratensis L. ＇s cultivation, among them, the ratio of maturity corn straw to garden soil 1 ： 4 is the most reasonable, because its grass＇ s quality and contents of chlorophyll, soluble sugar, soluble protein and POD activity are close to C K, and slightly superior to CK, its quality is much better, and which can reduce the cost of building up lawn matrix, and does not increase the burden of the management, according with the actual needs of mass production.