慈利县中稻测土配方肥效校正试验研究

为校正张家界慈利县测土配方施肥参数且优化肥料配方,客观评价其施肥效益,于2021年在慈利县进行中稻“玉珍香”测土配方肥效校正的田间试验。结果表明,测土配方施肥处理中稻每667m2化肥投入成本虽然较常规施肥处理增加26元,但产投比明显提高0.23,增产23.3 kg。与常规施肥相比,配方施肥有效穗数、每穗总粒数和千粒重分别增加4.04%、7.69%、10.38%。因此,测土配方施肥可满足水稻的生长发育需求,植株性状好,提升中稻施肥的科学性,有明显的增产增收作用,值得在慈利县生产中大力推广。

Experimental study on fertilizer efficiency correction of rice soil test formula in Cili County

In order to correct soil testing formula fertilization parameters and optimize fertilizer formula in Cili County, Zhangjiajie, and objectively evaluate its fertilization benefit, a field experiment was conducted in 2021 to correct the fertilizer efficiency of medium rice "Yu zhenxiang" soil testing formula in Cili County. The results showed that although the fertilizer input cost per 667m2 was increased by 26 yuan compared with the conventional fertilizer treatment, the yield-to-input ratio was significantly increased by 0.23 and the yield was increased by 23.3 kg. Compared with conventional fertilization, the effective number of panicles, total number of grains per panicles and 1000-grain weight were increased by 4.04%, 7.69% and 10.38%, respectively. Therefore, soil testing formula fertilization can meet the growth and development needs of rice, plant traits are good, improve the scientific nature of middle rice fertilization, has obvious effect of increasing yield and income, it is worth promoting in Cili County production.