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Effects of topdressing ratio and frequency on the dry matter, yield, and quality of tomato and celery under a small amount of continuous subsurface drip irrigation

引用

International Journal of Agricultural and Biological Engineering 2023年第3期16卷 273-284页

作者： Lingmiao Huang Peiling Yang Haobo Cui Zhanghao Sun Shumei Ren Zhaocheng Wang College of Water Resources and Civil Engineering China Agricultural UniversityBeijing 100083China Management Committee of Xiamen Longyan Mountainous&Coastal Cooperative Economic Zone Longyan 364000FujianChina Beijing Engineering Corporation Limited Beijing 100024China Hebei University of Water Resources and Electric Engineering Cangzhou 061001HebeiChina Lingnan Water Group Corporation Limited Beijing 100062China

Compared with conventional full irrigation,the existing water-saving irrigation method achieves the purpose of water saving by actively controlling soil ***-frequency irrigation can make the ideal conditions for soil water movement and root absorption of water and *** research used a plot experiment in a greenhouse and set up different fertilization amounts and frequencies during the growth stage to study the effects of small-amount and continuous subsurface drip irrigation on the dry matter,yield,and quality of tomato and *** results showed that the frequency of topdressing had a great influence on the dry matter accumulation of tomatoes,and the amount of topdressing had little effect on the fresh weight of the upper part of a tomato *** application of high-frequency fertilizer increased the dry matter accumulation in the underground part of the *** the premise given amount of total fertilization,the growth rate and yield of tomatoes were positively correlated with the amount of *** optimum fertilization frequency was 1 time during the first fruit stage,3 times for the second fruit stage,and 5 times for the third fruit stage,the yield during the fourth stage was increased with higher frequency,and the topdressing was started ahead of the fourth fruit stage when the diameter of fruit was 40 *** lower fertilization frequency during the early stage and higher fertilization frequency during the later stage can increase the yield of *** higher ratio of topdressing,the higher frequency during the early growth stage,and the lower frequency during the later stage can achieve the best quality of celery.

关键词： fertilization frequency continuous subsurface drip irrigation topdressing fertilizer tomato celery

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