论文部分内容阅读
在我国北方地区,容易形成春旱。下面介绍几种节约灌溉用水的小窍门。1.渠道防渗。渠道经防渗处理后,可以大大减少输水过程中的渗漏损失,提高渠道抗冲刷能力,并防止淤积和杂草生长。2.推广灌溉新技术。(1)管灌。利用低压管道输水灌溉,一般每次灌水量可比土渠垄沟灌减少用水20%~30%。(2)喷灌。喷灌可以按照作物不同生长阶段的需水特点,随时调整灌溉定额,使土壤水分经常保持在适合作物生长的
In northern China, it is easy to form spring drought. Here are some tips to save water for irrigation. Channel seepage After the canal has been treated with anti-seepage treatment, it can greatly reduce the seepage loss in the process of water transmission, enhance the anti-erosion ability of the canal and prevent siltation and weed growth. 2. Promote new irrigation technologies. (1) pipe irrigation. The use of low-pressure water pipelines irrigation, irrigation amount per capita can be less than the soil ditching less water 20% to 30%. (2) Sprinkler irrigation. Sprinkler irrigation in accordance with the different stages of crop water characteristics, adjust the irrigation quotas at any time, so that the soil moisture is often maintained in a suitable crop growth