【摘要】 应用农艺改良+化学改良+排灌改良+甜高粱种植结合模式,把开发利用沙漠作为目标和方向,科学改良沙漠盐碱地两年。结果表明:其地力质量能很大改善,种植甜高粱两年后的土壤容重平均降低幅度1%~3%,有机质含量提升幅度为5%~10%,p H降低0.3~0.5个单位。由主成分计算得到,沙漠区甜高粱的抗倒伏主成分因子为:茎部重、重心高度、根量、秸秆数、茎杆机械强度、茎粗、株高。更多还原

【Abstract】 The desert such as saline-alkali soil was improved by means of integrated strategy that agricultural technology, chemistry measures, irrigation and drainage, and planting sweet sorghum for two years. Results showed that the soil quality could be improved greatly, average soil bulk density reduced by 1% ~ 3%, organic matter content increased by 5% ~ 10%, decrease of p H 0.3 ~ 0.5 units. By the analysis of principal component,the principal component factors for lodging-resistance of sweet sorghum in desert soil were: stalk weight, height of center of gravity, root weight, number of stem, mechanical strength of stem, stem diameter and plant height.更多还原