论文部分内容阅读
改善地下排水,创造良好的土壤环境条件是高产田实现高产再高产的重要措施之一。我省高产田多分布在河网平原地带,受江河水位的影响,地下水位偏高。在田间灌水和季节性雨季中,一般地下水位在30～50公分以上。土壤内部水多气少,养分有效性差,对稻根生长十分不利,经常出现水稻后期衰老快,结实率差,影响产量的进一步提高。
Improving underground drainage and creating good soil environmental conditions are one of the important measures to realize high yield and high yield in high yield fields. High-yielding fields in our province are mostly distributed in the plains of the river network. Influenced by the water level of rivers, the groundwater level is high. In the field irrigation and seasonal rainy season, the general groundwater level in 30 to 50 cm above. Soil less water and less gas, nutrient availability is poor, the growth of rice roots is very unfavorable, often appear late rice aging fast, poor seed setting rate, affecting the yield to further improve.