论文部分内容阅读
我场是濒临渤海的旱碱麦区,干旱和盐碱是小麦增产的两大障碍。而春季则是旱碱地小麦死苗的危险时期。根据旱碱地小麦的生育特点和旱碱发生发展规律,切实抓好以下几项行之有效的春季管理技术,千方百计把苗保住,并巧攻水肥,促进生长,才能获得小麦的较好收成。一、根据盐碱消长规律,狠抓返青期的管理,防碱、保墒、增温,改善小麦的生态条件旱碱地小麦早春管理的有效措施是锄、搂、耙。据调查,早春锄搂的麦田可以提高地温1—3℃,增加土壤含水量1.5—3％,土壤耕层含盐量下降0.34％。不但对保苗有好处,还有利于小麦根系发育,促进分蘗,增强光合作用,使弱苗变壮,壮苗得以巩固,旺苗受到控制。因此,不论什么土壤和苗情,早春都要抓紧中耕管理。
My field is on the auricular barley area near the Bohai Sea. Drought and saline-alkali are the two major obstacles to the wheat yield increase. While spring is a dangerous period of alkaline drought wheat seedlings. According to the characteristics of wheat in arid alkaline land and the occurrence and development of drought and alkali law, earnestly grasp the following effective spring management techniques, do everything possible to save the seedlings and skillfully attack water and fertilizer to promote growth in order to get better wheat harvest. First, according to the law of growth and decline of saline alkali, pay close attention to management of returning green period, prevent alkali, maintain soil moisture, increase temperature and improve the ecological conditions of wheat. The effective measures to manage wheat in spring in arid alkaline land are hoe, hug and harrow. According to the survey, hoeing in early spring wheat fields can increase ground temperature 1-3 ℃, increase soil moisture 1.5-3%, soil salinity decreased 0.34%. Not only benefits seedlings, but also conducive to wheat root development, promote tillering, enhance photosynthesis, so weak seedlings strong, strong seedlings to be consolidated, Wang seedlings under control. Therefore, no matter what soil and seedling conditions, we must pay close attention to cultivating management in early spring.