【摘要】 应用气候生产潜力理论,定量考虑了光、温、水3种气候要素对玉米生长发育的影响,组建了利用气候资料计算玉米潜在产量的理论模式,算出旱地玉米的最佳,播种期中熟种在5月中下旬,早熟种在6月上中旬,与分期播种试验的结果相一致.论证了等雨晚播技术是符合气候规律的防旱增产有效措施.应用山地气候变化规律,提出玉米等雨晚播的“海拔—播期—品种搭配”配套技术.更多还原

【Abstract】 Using the theory of climatiac potentul productivity, and evaluating the quantitative influence of solar radiation, temperature and water on the growth of maize, a set of models for estimating the potential yields of maize on the basis of climatic . data was established. The calculated optimum seeding date, for the medium variety, is the last 20 days of May, and for the early variety, is the first 20 days of June. It fits the results of field tests quite well. It is also identified that the technique of postponing seeding date while waiting for rain conforms to the pattern of climate, and is an effective way to avoid drought and increase yield. In accordance with the pattern of climate in the mountainous region, a complete set of the " elevation - seeding date-variety" technique was established.更多还原