据统计,福建省约有浅脚烂泥田137万亩,占全省冷浸田类总面积(630万亩)的21.7％,它的理化生物性不适于水稻生长,单产都很低。如何有效地改良和提高其单产,是当前粮食增产的一项重要工作。我们于1963年起在本院教学农场和邵武综合农场苦竹湾作业区,进行了浅脚烂泥田开沟排水和增施磷肥的综合试验。现将三年间的试验结果加以整理,供参考。 一、试验方法 (一)技术措施的理论依据 本省浅脚烂泥田的含磷量很低,一般在5ppm左右(表1),以致开沟排水改善了水热条件之后,缺磷上升为主要矛盾。浅脚烂泥田经改良后有效磷极低的原因,是与磷素的存在形态有一定关系。首先,浅脚烂泥田的水土温度低,透气性差,有机磷的转率化很 According to statistics, there are about 1.37 million mu shallow shallow muddy fields in Fujian Province, accounting for 21.7% of the total cold paddy fields in the province (6.33 million mu). Its physical and chemical properties are not suitable for rice growth with low yields. How to effectively improve and increase its yield is an important task for increasing grain output. In 1963, we conducted a comprehensive trial of ditching and ditching drainage and phosphate fertilization in our teaching farm and the Kutus Bay operating area in Shaowu Comprehensive Farm. Now three years of test results to be sorted for reference. First, the test method (A) the theoretical basis for technical measures The shallow phosphorus muddy fields in the province of phosphorus content is very low, generally about 5ppm (Table 1), resulting in ditching drainage to improve the hydrothermal conditions, phosphorus deficiency as the main contradiction . Shallow shallow muddy soil after the improvement of very low effective phosphorus is due to the existence of the existence of phosphorus has a certain relationship. First of all, shallow soil muddy soil temperature is low, poor air permeability, organic phosphorus conversion rate is very