摘要
为了解水肥一体化技术在青海高寒干旱区露地作物生产的应用效果,以辣椒为研究对象,试验设置了4个灌水下限W1(85%θ)、W2(70%θ)、W3(55%θ)和W4(40%θ)以及3个施肥水平F1(低肥)、F2(中肥)、F3(高肥),研究了不同灌水下限和施肥量对辣椒生长和产量的影响。试验表明,在同一灌水条件下,适当增加施肥量可以显著提高辣椒株高、茎粗和产量,但过高的施肥量不利于辣椒生长和产量的提高;在同一施肥条件下,提高灌水下限可以显著增加辣椒产量;综合考虑,辣椒最优灌溉制度组合为W1F2,其节水节肥效果显著且最有利于辣椒的生长和产量的提高。
Pepper as a cash crop is taken as the object of study to investigate the application effect of drip irrigation and {ertigation in alpine arid area of Qinghai Province. Four irrigation threshold treatments including Wl （85 %θ）, W2 （70 % θ）, Wa （55 % θ） and W4 （40% θ）, and three fertilization treatments including Fl（low）, F2（middle） and F3（high） are designed to study their influence The influence of different irrigations and fertilizations on the growth and yield of pepper. Test shows that under certain irrigation thresh- olds, the plant height, stem diameter and yield can be significantly increased along with the increase in fertilization amount, while ex- cessive fertilization is detrimental to the growth and yield improvement of pepper. For certain fertilization amount, the yield per plant can be improved by a rational increase in irrigation threshold. The comprehensive consideration of the treatment of W1F2 is condu- cive to the growth and yield of pepper.
出处
《中国农村水利水电》
北大核心
2016年第10期73-76,共4页
China Rural Water and Hydropower
基金
水利部科技推广项目(TG1301)
