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 Wysłany: Wto 12:09, 15 Lut 2011 Temat postu: GHD glätteisen günstig _3760 Valuation met |
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Evaluation of land resources
Evaluation. Long Island forest area of about 3. z million hm, dominated by farmland, the soil type is mainly meadow soil and marsh soil, the total area of 63. . Arable land in order to dry the main staple crops are wheat, soybeans, corn in a large number of experimental data, based on the level of law as the main framework, to find a more stable element that is present as a dominant factor in terrain analysis for appropriate class, and then parameters Method of test data obtained by principal-component analysis to select the soil quality of arable land the main factors, such as terrain,[link widoczny dla zalogowanych], water, barrier layer depth occurs, physical clay, yield, organic matter, available P, Geng repeated thick. Total hoe do i B f enough in modern agriculture 10 Fung j | c 'South (of the total ● 21S) on the fully optimized structure of rice varieties in Heilongjiang reclamation proposals in! Plastic L-Yan Feng scrimp' | Heilongjiang Province, Wang Yi shaking Luo Hu Jia beam operation by Sri Lankan lotus 1sto2s). Fall! Zhanyong Mei (black smear Health Shannong scorpion Giang Province) 『J. Port 1 only the amount of area 'protracted situation bearing in mind that there is Q ■ varieties Reclamation through 1988 to early 1992, focusing on thermal yield rice varieties to rectify the 1st and early 1993's to focus on high yield rice variety structure 2nd adjust the structure of varieties of rice growing Reclamation reasonable barrier, according to incomplete statistics in 1996 Reclamation top rice-growing area of 1O-bit varieties (lines) were Dongnong 416, No. Hejiang l9, Ken Rice 6, the amount of a 3l Kam 9O , Longjing 8,[link widoczny dla zalogowanych], Charles 88-148, Charles Rice l No. Suijing 1, 397 on education, the dragon shield 101, which early varieties planted acreage of the total area of 37.6. Heat varieties accounted for 55.9; quality rice varieties cultivated area of the total acreage jumped 52.9, 38.7 non-quality rice varieties. The summer of 1998 consecutive low rainfall, the rice was significantly delayed maturity, rice blast, etc. serious and widespread disease. Rice revealed the structure of the reclamation area there are still certain problems, mainly in the partial maturity varieties ① late arrival delayed Chilling Street, reduced ability to '@ some of the farm seed management neglect. Variety selection of varieties on the laissez-faire I @ ignore scrambling disease resistance, cold resistance and grain quality of the selected command, the blind pursuit of production. 2 fully optimize the amount of the reclamation area in rice variety structure proposed in the future to fully optimize the seed structure. The general requirement is to strengthen early, scrambling disaster, high quality, high and stable yield awareness of resistance to early frost, chilling injury, rice blast and other natural disasters the government. Strengthen the sense of early maturity high yield, to build early closing times of the main H} 1996-12-17 variety of structures. By increasing the level of cultivation, to fully tap the potential of early hot varieties in order to increase yield. Agriculture and auxiliary equipment to learn more about their own eco-scape regional climate, soil and irrigation conditions and production levels. Select appropriate maturity varieties. Hu c deleted as early as hot varieties (low in the normal mature before frost, usually over years into the heat before the earthquake 10d) accounted for more than 7O. Accumulated temperature 2300 I lO leaf varieties with accumulated temperature 2Ioo ~ 25oo ℃ accumulated temperature with 3 of the irrigation area to the main varieties of n leaves,[link widoczny dla zalogowanych], with leaf variety I l2 Irrigation Ponds and Water Irrigation Area 2 to l2 accumulated with the main leaf varieties. 2 with n leaf varieties with non-irrigation area have accumulated to l2-based leaf varieties. With n leaf varieties and a small amount of 12 to 13 leaf varieties. b. Establish a base surface, comprehensive selection of standard varieties,[link widoczny dla zalogowanych], high in heat stressed earlier the same time, should pay attention to varieties of resistance and grain quality. c. Selecting the right varieties the main reservoir, do a good job back-propagation model species. Hejiang 19, the amount of rice 6 Dongnong 416, Long after the 101 can continue to grow, Longjing 8, cold tolerance and good but the grain quality and resistance to pain and poor to limit fat rate to promote Ken Kam 9O a 3l to replace Hejiang l9 number and I Longjing 8 Man of Sui 92-188 and 93-341 both back lines, to expand the pilot demonstration. Of the corresponding cultivation techniques, make preparations before the promotion d. The test and demonstration phase to demonstrate that the production standards do not have the seed varieties (lines). (018) degree. Then function method,[link widoczny dla zalogowanych], to yield as the dependent variable, the main factor in other factors as the independent variable t and thus an indicator of cell classification of land suitability evaluation of the data eventually. After the application of land planning department. Results were better, basically reflects the quality of local land resources and improve the accuracy of evaluation of land resources. Reduce the shaggy man-made sound by Zhu. ● BIBLIOGRAP hail more than 1 main spring. Main group element analysis in the resolution of a soil type and weathering process of soil formation on the application. Soil, 1979,16 (2); 172 ~ l822 beam toward the instrument. Land evaluation. Zheng Xian Henan Science and Technology Press, 1992 (018)
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