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腐植酸液肥——科力素(KLS)对水稻生长发育影响较大。试验表明,水稻苗床施用KLS明显刺激秧苗生长,处理区根长、根数、地上地下百株鲜重及带蘖率都好于对照区。不同生育时期喷施KLS,水稻发育加快,自返青期开始到成熟期都有不同程度提前,一般早熟3～5d。产量增加幅度为4.7%～21.1%,平均增产11.3%,亩增效37.44～204.48元,平均为99.2元,产投比约为12∶1。
Humic acid fertilizer - KLS has a great effect on the growth and development of rice. The results showed that applying KLS to rice seedbed significantly stimulated the growth of seedlings. The root length and number of roots, the fresh weight of 100 plants above and below ground and the tillering rate were all better than the control. Spraying KLS at different stages of growth, rice development accelerated, since the beginning of rejuvenation to maturity have different levels of advance, generally 3 ~ 5d. The yield increase ranged from 4.7% to 21.1% with an average increase of 11.3%. The yield of mu increased from 37.44 to 204.48 yuan with an average of 99.2 yuan. The ratio of production to investment was about 12: 1.