Studies on water and fertilizer coupling under mulch drip fertilization on tomato in solar-greenhouse in North China

Under the condition of solar greenhouses drip irrigation,this test is conducted to study effects of water-fertilizer coupling techniques on growth and development of tomato under mulch drip fertilization in solar-greenhouse.The results show that regression analysis is reliable(F回〉F0.01(5,7)=6.1088),and that a very significant regression relationship is found between irrigation ration and fertilizer ration.Therefore,it is proposed that the optimal scheme of water-fertilizer coupling is irrigation quantity ranging between 2 722.5～2 836.9 m3/hm2 and fertilization amount ranging between 265.5～294.4 kg/hm2 in North China,which may be applied to commercial tomato production.