【摘要】：【目的】研究三亞芒果主產(chǎn)區(qū)土壤養(yǎng)分豐缺及與樹(shù)體礦質(zhì)養(yǎng)分相關(guān)性,以期掌握芒果園土壤肥力現(xiàn)狀,為科學(xué)、合理制定三亞芒果主產(chǎn)區(qū)的施肥策略奠基礎(chǔ)�！痉椒ā客ㄟ^(guò)對(duì)三亞芒果主產(chǎn)區(qū)育才鎮(zhèn)、立才農(nóng)場(chǎng)、崖城、農(nóng)綜及永介等主產(chǎn)區(qū)芒果園0~20、20~40 cm土層采集的103個(gè)土壤樣品和相應(yīng)采樣果樹(shù)葉片樣品進(jìn)行養(yǎng)分測(cè)定分析�！窘Y(jié)果】研究發(fā)現(xiàn),芒果園土壤pH均值為5.66,果園土壤呈酸性;果園有機(jī)質(zhì)含量(10.16~21.60 g·kg~(-1))偏低,隨土層加深而降低,各地果園有機(jī)質(zhì)含量基本為三級(jí)及以下水平;果園土壤全氮含量(0.37~1.29 g·kg~(-1))較低,基本在三級(jí)及以下水平;土壤速效鉀(平均值為210.75 mg·kg~(-1))、速效磷(平均值為39.69 mg·kg~(-1))含量較高,大部分土壤在三級(jí)及以上水平范圍;芒果園土壤交換性鈣含量(381.42~1897.92 mg·kg~(-1))較豐富,交換性鎂含量(24.87~234.54 mg·kg~(-1))較低,鈣、鎂含量隨土層加深而降低,硫含量隨土層深度增加而升高;芒果園微量元素含量比較豐富,微量元素含量均隨土層的加深而減少;果園土壤養(yǎng)分含量與葉片礦質(zhì)元素含量的相關(guān)性較強(qiáng),葉片鎂、葉片硫分別與土壤全氮、土壤速效磷、交換性鈣、交換性鎂、有效鐵均呈顯著正相關(guān)關(guān)系,相關(guān)系數(shù)均為1.000;葉片鎂、葉片硫含量與土壤有效錳、有效鋅含量呈顯著負(fù)相關(guān)關(guān)系,相關(guān)系數(shù)均為-1.000;葉片錳含量與土壤pH、土壤堿解氮、土壤有效硼含量呈顯著正相關(guān)關(guān)系(相關(guān)系數(shù)為1.000),葉片錳含量與土壤有機(jī)質(zhì)、土壤速效鉀、有效硫含量呈顯著負(fù)相關(guān)關(guān)系(-1.000)�！窘Y(jié)論】三亞芒果園土壤有機(jī)質(zhì)、土壤氮(全氮、堿解氮)含量均較低,土壤速效磷和速效鉀含量比較豐富,交換性鎂含量較低;芒果園土壤微量元素含量豐富。根據(jù)本調(diào)查研究,建議果園生產(chǎn)中以基肥為主,增施有機(jī)肥,適當(dāng)增加氮肥,多施鎂肥。在施肥時(shí)應(yīng)根據(jù)各地區(qū)養(yǎng)分豐缺度平衡施肥,適當(dāng)補(bǔ)充少量微量元素,結(jié)合實(shí)際情況采取減少養(yǎng)分流失的措施。
[Abstract]:[objective] to study the abundance and shortage of soil nutrients and the correlation between soil nutrients and tree mineral nutrients in the main mango producing areas of Sanya, in order to master the present situation of soil fertility in mango orchards and lay the foundation for scientific and rational formulation of fertilizer strategies in the main mango producing areas of Sanya. [methods] the main mango producing areas in Sanya were treated with Yucai Town, Licai Farm and Yacheng. The nutrients of 103 soil samples and corresponding fruit tree leaf samples collected from 0 / 20 and 20 鹵40 cm soil layers of mango orchards and other main producing areas were determined and analyzed. [results] it was found that the mean pH of mango orchard soil was 5.66, and the orchard soil was acidic. The content of organic matter in orchard (10.16 鈮，

本文編號(hào)：2518035