海南露地樱桃番茄需肥特点研究

[目的]研究樱桃番茄生长过程中的需肥特点。[方法]以千禧樱桃番茄为材料,分析海南省陵水县地区不同生育期樱桃番茄需肥特点。[结果]樱桃番茄全生育期对营养吸收量从大到小依次为速效钾、有机质、碱解氮、交换性钙、速效磷、铁、交换性镁、锰、锌、硼。对有机质、铁、钙和镁的吸收量以营养生长期为主,对磷、钾、锌和锰的吸收量以生殖生长期为主,营养生长期和生殖生长期对氮和硼的吸收量相当。[结论]应根据樱桃番茄不同生育期所需养分多寡和肥料养分含量特点确定施肥量。

土壤养分对樱桃番茄果实可溶性固形物含量的影响

以千禧樱桃番茄为材料,对海南省陵水县的不同地区土壤养分含量和樱桃番茄果实可溶性固形物(TSS)含量进行测定,筛选影响樱桃番茄品质的主要土壤养分因子。结果表明,樱桃番茄成熟果实中的TSS含量与土壤中速效钾和交换性钙含量呈极显著正相关、相关系数分别为0.587**和0.514**,与锌元素含量呈显著正相关、相关系数为0.324*,与铜元素含量呈极显著负相关、相关系数为-0.613**,与硫元素含量呈显著负相关、相关系数为-0.332*。在一定含量范围内,提高土壤中速效钾、交换性钙和锌元素的含量,并控制铜元素和硫元素的含量,可提高陵水县樱桃番茄果实品质。

芒果主要病虫害及防冶

芒果的主要病害有炭疽病、白粉病、细菌黑斑病等,主要虫害有扁喙叶蝉、横线尾夜蛾、叶瘿蛟等。做好芒果病害和虫害等方面的防治工作尤为重要。阐述了芒果的主要病害、虫害及其相应的防治方法,为提高芒果的产量和质量奠定基础。

Effects of Different Soil Nutrient on the Soluble Solids Content of Cherry Tomato

In order to choose main factors of soil nutrient affecting cherry tomato fruit quality, the soil nutrient content and total soluble solids （TSS） content of cherry tomato in different regions of Lingshui County in Hainan Province was determined, with Millennium cherry tomato as material. The results showed that the TSS content in mature cherry tomato fruit was extremely significant positive to available potassium and exchangeable calcium content in soil, with correlation coefficients of 0.587＊＊ and 0.514＊＊, respectively. The TSS content was significant positive to zinc content, with a correlation coefficient of 0.324＊, And the TSS content showed extremely significant negative to copper content with correlation coefficient of-0.613＊＊ and significant negative to sulfur content with a correlation coefficient reaching -0.332＊. In certain range of contents, the quality of cherry tomato fruit in Lingshui County could be improved through increasing the content of available potassium, exchangeable calcium and zinc in soil, as well as control copper and sulfur content.