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在我省有风、寒为害的闽东南南亚热带地区种植热作橡胶成功;目前已植胶十二万六千多亩,今年干胶产量达四百五十吨以上,已为国家经济和国防建设提供日益增多的重要物质,这是一个伟大的创举.但是,由于过去受极左路线的影响,生产责任制不落实,许多胶园周围的森林及防护林遭到乱砍滥伐;梯田多年失修,水土流失相当严重;在土壤管理上只注意中耕除草,忽视了改土培肥与复盖.目前有不少胶园存在生态环境日益恶化、土层日益沙化与变薄以及土壤肥力日益衰退的趋势.这对胶树正常生长,产胶及抗寒越冬十分不利.如省热作所东风作业区压青试验地1964年开垦时植被为茂密的灌丛禾草,0—15厘米土壤有机质含量为2.94—3.93%,全氮量0 .16%,全磷量0.079%,速效磷4.35P·P·m,效速钾180.6P·P·m;15—30厘米土壤有机质达1.98—2.39%.但植后十几年来,土壤肥力不仅没有提高,反而明显下降.1979年9月在该片试验地台面距胶树100厘米处采样分析的结果:0—20厘米土壤有机质含量下降为1.84%,全氮量0.079%,速效磷1.15
In our province windy and cold damage in southern Fujian subtropical areas of tropical rubber planting success; now has transplanted 126,000 acres, dry glue production this year reached 450 tons, has been for the national economy and national defense It is a great initiative to build and provide an ever-increasing number of important material items. However, due to the imposition of the ultra-Leftist route in the past, the responsibility system for production was not implemented and many forests and shelterbelts around the rubber plantations were deforested; , Soil and water loss is quite serious; in the soil management, we only pay attention to cultivating and weeding, ignoring soil fertility and covering.At present, there are many rubber plantations in which the ecological environment worsens, the soil becomes increasingly desertified and thinner, and the soil fertility is declining This is the normal growth of gum trees, plastic production and winter is very unfavorable .For example, the province is hot for the work area of the East pressure green trials in 1964 reclamation vegetation is thick shrubs, 0-15 cm soil organic matter content 2.94-3.93%, total nitrogen 0.16%, total phosphorus 0.079%, available phosphorus 4.35P · P · m, available potassium 180.6P · P · m. Soil organic matter of 15-30 cm reached 1.98-2.39% But after ten years of planting, soil fertility has not only failed to improve, but on the contrary The results fell significantly in September 1979 in the film to test the table 100 cm from the gum trees at the sampling and analysis of: 0-20 cm soil organic matter content dropped to 1.84%, 0.079% total nitrogen, available phosphorus 1.15