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对φ（Ｎ）３２°１４′～３２°５６′，λ（Ｅ）１０４°３６′～１０４°５１′范围内４００～１４００ｍ稻田小气候进行了观测，发现海拔（ｈａｌｔ）不同，稻田生态环境相差很大：ｈａｌｔ每升高１００ｍ，平均气温（θａｒ）递减０．７２℃，年降雨量递增６３．０ｍｍ（４００～６００ｍ）～１０６．８ｍｍ（８００～１４００ｍ），相对湿度递增１％，日照时数呈抛物线上升变化．ｈａｌｔ４００ｍ日均温稳定通过１２．０℃的初期为３月中旬，ｈａｌｔ每升高１００ｍ，该时间延迟５～７ｄ．不同ｈａｌｔ＞１２℃的有效积温分别为３６２１．２℃（４００ｍ）、３２４５．０℃（６００ｍ）、３１４９．９℃（８００ｍ）、２８０４．８℃（１０００ｍ）、２０８２．１℃（１２００ｍ）、１９５０．１℃（１４００ｍ）．在相对较高的ｈａｌｔ，存在明显的逆温和南北坡效应，相应存在杂交水稻局部高产区．本研究结果为四川不同海拔区杂交水稻品种合理布局和应用高产优质栽培技术提供了基础理论依据
The microclimate of 400 ~ 1400 m paddy field in the range of φ (N) 32 ° 14 ’~ 32 ° 56’, λ (E) 104 ° 36 ’~ 104 ° 51’ was observed and it was found that the ecological environment of paddy fields differed The annual average rainfall temperature (θar) decreases 0.72 ℃, annual rainfall increases 63.0mm (400 ~ 600m) ~ 106.8mm (800 ~ 1400m), and the relative humidity increases 1% The number showed a parabolic rise and change. Halt400m daily average temperature stable through the initial 12.0 ℃ for mid March, halt increased 100m, the time delay of 5 ~ 7d. The effective accumulated temperatures of different halt> 12 ℃ were 3621.2 ℃ (400m), 3245.0 ℃ (600m), 3149.9 ℃ (800m), 2804.8 ℃ (1000m), 2082.1 ℃ 1950.1 ° C (1400m). In the relatively high halt, there is obvious inversely temperate and north-south slope effect, correspondingly there are some high-yielding hybrid rice areas. The results provided the basic theoretical basis for the reasonable layout of hybrid rice varieties and the application of high yield and good quality cultivation techniques in different altitude regions in Sichuan