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沙溪流域作为全国国土整治二十七个试点之一,在综合治理规划中提出利用中下游河谷建立两万亩甜橙基地,有否条件?能否取得较佳的经济效益呢?根据这一地带的自然资源与现有的甜橙生产栽培情况,回答是肯定的,其理由是: 一、生态条件适宜建立甜橙基地。全国柑桔品种生态规划的气温指标规定,甜橙适宜区年平均气温要求16°～18℃,>10℃的年积温必须在5000°～5500℃以上,极端最低气温多年平均值-3°～-1℃,一月份平均气温5°～7℃,绝对低温>-5℃,灵活度以不超过0.2℃范围为准。沙溪中下游河
As one of the 27 national pilot sites for soil remediation, Shaxi Basin proposed whether to establish a two-thousand-mu-area sweet orange base in the middle and lower reaches of the river in comprehensive management planning. Is it possible to obtain better economic benefits? According to this The natural resources in the zone and the current situation of the production and cultivation of sweet orange are answered in the affirmative. The reasons are: First, the ecological conditions are suitable for establishing a sweet orange base. The national temperature index of citrus varieties ecological planning requires that the annual average temperature of sweet orange suitable area should be between 16 ° and 18 ° C, the annual accumulated temperature of> 10 ° C must be above 5000 ° to 5500 ° C, and the average temperature of extreme minimum temperature should be between -3 ° and + -1 ℃, the average January temperature of 5 ° ~ 7 ℃, absolute low temperature> -5 ℃, flexibility to not exceed 0.2 ℃ range prevail. Middle and lower reaches of Shaxi River