Selection Of Substrates Of Factory Seedling--Physico-chemical Quality Variety Of Peanut Shell Decomposed With Different Nitrogen And Its Effects On Growth Of Lycopersicum Esculentum Seedling

In order to acquire good substrates for factory seedling as the substitute for peat media , the physical and chemical characters of peanut shell which had been composted with different levels of urea(part A), compound-fertilizer(part B) and chicken-manure(part C) and then the effect of pure peanut shells or mixed with different level of peat on tomato( lycopersicum esculentum} seedling growth were further studied. All of the results were summarized as follows: 1. After being decomposed, the bulk containing density capacity of peanut shell increased, so did the total porosity, however, the air-filled porosity decreased; Cation exchange capacity and electric conductivity also increased same, pH scale lied in 6.0^7.0 ; 2. Except for the control 1, the total nitrogen(N)> phosphorus(P)> potassium(K) and organic matter in all other treatment increased. 3. With the decomposed peanut shells used for sowing, all of the treatments had very high seedling ratio, except for AS and A,*. 4. With pure peanut shell substrates for seedlings culture, the growth quality of most treatments apparently exceeded that of peat media. Within 37 days after sowing, B3 treated with 9 kg compound-fertilizer per cubic peanut shells grew fastest. After 37 days, the growth of Cs which was treated with 60 kg chicken-manure media exceeded that of 63. The tomato (lycopersicum esculentum) seedlings culturing on mixed substrates added with same nitrogen fountain grew better than the controls on peat media. Especially, the substrate, A1 added 2 kg urea per cubic peanut shells was the best in all the treatments with urea, and B3 was the best in the treatments with compound-fertilizer; For the media with chicken-manure, C2 added 40 kg chicken-manure per cubic peanut shells was known as the best for seedlings 37 days old; Furthermore ,C3 added 60 kg chicken-manure per cubic peanut shells is superiority for seedling culture; To mixed culture media, the treatments withA1, 63,C2 and some media material appeared better than others of peat media. C2-01 (50%peanut shells +30%peat +20% vermiculite)in which 40 kg chicken-manure had been added during one cubic peanut shells decomposition) is best. It is known that tomato ( lycopersicum esculentum) seedlings growth is influenced by substrates with different content of peanut shells. In our experiment, Seedlings culturing on the substrates with 50% content peanut shells were best. 5. During seedling growth, the growth of tomato (lycopersicum esculentum) seedlings on the peanut shell substrates, which was fresh or decomposed without nitrogen fountain, was seriously inhibited and could not get better to be used as the substitute for tomato seedling, even if peat was mixed with it. 6. The treatments decomposed with Eymogenic bacteria (As) and EM (Ae) were obviously superior than that dealt without Eymogenic bacteria, especially, to the treatment with EM (Effective Micro-organisms) , the dry matter quantity and physiology activity of seedlings were improved with the longer growth period. Therefore, we conclude that pure composted peanut shells, after being decomposed with some suitable nitrogen material or mixed with peat and vermiculite, certainly can be used as the good substitute for peat media infactory-seedling.