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水稻留高茬是稻草还田的一种形式。为解决水田农肥不足,平衡土壤有机质和硅、钾等营养元素,改良土壤,培肥地力,确保水稻持续高产、稳产,增加经济效益,盘锦从1986年开始推广水稻留高茬,至1991年累计推广面积达187万亩,增产稻谷5900万公斤。稻茬高度10～15厘米,秋翻稻茬入土。通过几年的试验,示范和大面积推广,证明水稻留高茬是一项应该大力推广的增产措施。一、扩大肥源资料表明,稻茬中含纤维素30～40%、氮0.678%、磷(P_2O_5)0.217%、钾(K_2O)1.828%、硅(SiO_2)12%,留高茬可为水稻生长提供大量有机质和多种营养元素。1991年
Rice remains in high stubble is a form of straw. To solve the shortage of paddy field manure, the balance of soil organic matter and silicon, potassium and other nutrients, soil improvement, fertility and fertility, to ensure that rice continued high yield, stable production and increase economic benefits, Panjin from 1986 to promote rice to stay stubble, accumulated in 1991 To promote the area of 1870000 acres, an increase of rice 59000000 kilograms. Rice stubble height of 10 to 15 cm, autumn turn rice stubble soil. After several years of experiments, demonstrations and large-scale popularization, it is proved that the high-yielding rice is a stimulant that should be vigorously promoted. First, the data of expanding fertilizers indicated that the rice stubble contained 30-40% of cellulose, 0.678% of nitrogen, 0.217% of phosphorus (P2O5), 1.828% of potassium and 12% of silicon (SiO2) Growth provides a large number of organic matter and a variety of nutrients. year 1991