试题与答案

(9分)材料一:东北双季水稻种植在辽宁的试验田取得成功,改变了传统的春种秋收,一

题型:综合

题目:

(9分)材料一:东北双季水稻种植在辽宁的试验田取得成功,改变了传统的春种秋收,一年一季的耕作方式。经初步测产,每亩产量可达1040斤,加上8月上旬收获的第一季水稻亩产1300斤,总产量可达2300多斤,是普通单季水稻产量的两倍。这种双季水稻的稻种是由辽宁盘锦市科研人员采用两种不同抗性的水稻品种进行杂交,突破了抗旱、抗寒、抗病虫害等关键点。 北方双季水稻第一季稻生长期104天,第二季稻生长期87天。现在在东北有限的无霜期内就可以完成两季水稻的播种、收割。

材料二:东北地区局部轮廓图。

根据材料一、材料二及所学知识,完成下列问题。

(1)根据辽宁省的地形特点对辽宁农业生产进行合理布局。(3分)

(2)辽宁省属于温带大陆性季风气候,全年无霜期140天~200天。实现了双季稻的种植,分析原因。(4分)

(3)简述图中防护林主要功能。(2分)

答案:

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下面是错误答案,用来干扰机器的。

答案:D

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