Abstract
In order to reveal the regulating capacity of organic fertilizers on sandy soil, pots experiments were carried out. The growth of tomatoes planted on sandy soil amended by organic fertilizers was measured. Organic fertilizers can be helpful to improve the plant height, stem diameter, the aerial parts fresh weight, root fresh weight, leaf photosynthetic rates and photosynthesis, and lay a good foundation for the growth of tomatoes. The effect of organic fertilizer is the most significant. Among all the treatments of adding 2.5%, 5%, 10% organic fertilizers, adding 10% organic fertilizers are the best. It can significantly enhance the growth and photosynthesis of tomatoes, and it is among the best of these three soil treatments for sandy soil.
Highlights
Sandification is an environmental problem for the world
Adding 2.5%, 5%, 10% organic fertilizers in strong sandy soil obviously improved the parameters of the plant height, stem diameter, the aerial parts fresh weight, root fresh weight of tomato leaves (Table 2)
The results showed that when the RSWC was 60%, the photosynthetic rate of adding organic fertifizer increased apparently to the max value of 7.13 μmol· (m2·s) -1 under 1600 μmol· (m2·s)-1 Photosynthetic Photon Flux Density (PPFD)
Summary
Sandification is an environmental problem for the world. China is one of the countries suffered desertification seriously. The results show that, by the end of 2009, the area of national sandy lands, 18.03% of national lands, is 1, 731, 100 hm2 In these areas, 310,000 hm became sandy soil obviously. Soil amendments have been reported to change sandy soil texture in order to increase water holding capacity [1]. Soil amendments can change the characters of sandy soil, but enhance yield, quality [6] and stress resistance [7], promote the growth of horticultural plants. The experiments reported here evaluated the use of organic fertilizers to improve the plant height, stem diameter, the aerial parts fresh weight, root fresh weight, leaf photosynthetic rates and photosynthesis by two kinds of sandy soil, for revealing the regulating capacity of organic fertilizers on sandy soil
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