Studies On Selecting For New Varieties Of Tomato And Squash Adapted To Greenhouse And Technology Of Fertilizer Applying

This research focuses on solving key problems in current cultivating facilities vegetables, including selection for new varieties, fertilization rations and the prediction and diagnos of disease. In this research, two tomato varieties and one squash varietie which are disease-resistent, high productive, and good-quality were selected; The standard of fertilizations was studied and the appropriate fertilizer content and application method under the 6-10m~3 organic manure per 667m~2 were clearified;Culture process for tomato and squash to achieve good quality and high production were developed1.Selection for early-spring tomato varities in greenhouse. After comparing 10 different imported tomato varities, based on production, quality, and resistence, etc, A3: Fenguan 888 and A2: ZhongzaNo.9 are better than other varieities in production, quality and resistence, which are the best choices for early-spring in greenhouse2. Comparision test for winter squash in greenhouse. The result shows that A6, A7 and A2 are best in production; A6 are best in disease-resistence; A3, A9 and AlO are best in qaulity. And a good squash varietiewere selected through the research.3.Studies on the method of fertilization rations of tomato in greenhouse.. The result shows that the production and quality were greatly affected by the production and quality. The proper calculation for fertilization was the margin of required fertilization contend for aimed production and effective nutrients in soil divided by the absorb rate of nutrients: (required fertilizations for aimedproduction - effective nutrients in soil)/absorb rate of nutrients4. Culture process to achieve good quality and high production for early-spring tomato and later-winter squash in greenhouse were developed.5. Progation of new variteis and new technology. This research result has been used in XinTai, Fencheng, Dayue district(Taian). The culturing area is almost 61 thousands acres, with 7599.6 kilo per acre compared with 6413.5 per acre before this research, around 18.49% increasing rate, totally producing 720 thousands more than ever. The cost for fertilization decreased from 460 yuan to 320 yuan, with 30.43% decreasing rate. The profit for every acre increased 1584.71 yuan and totally profit for this research is 6712.934 per acre.6. The research and popularization of this technology have already obtained the third-class award of scientific and technological progress of Tai'an in 2004...