CAJ | 학술논문

为探讨广西冬季免耕马铃薯高产高效栽培适宜的施肥水平,2008年在平果县进行大田试验研究不同施肥水平对免耕马铃薯生长和产量的影响.结果表明,在一定施肥范围内,随着施肥水平的提高,虽然免耕马铃薯的株高、茎粗、分枝数、单株结薯数,单株薯重以及产量随之增加,但马铃薯农田纯收益并没有随着施肥水平的提高而增加,单位肥料马铃薯生产量随着施肥水平的提高反而逐渐降低.其中N_(180)P_(180)K_(360)处理的农田纯收益最高,单位肥料生产量也较高.可见,在本试验条件下,每公顷施N180 kg+P_2O_5180 kg+K_2O360 kg(即复合肥1200 kg+50%硫酸钾360 kg),是比较适宜广西马铃薯免耕高产高效栽培的施肥水平.
위탐토엄서동계면경마령서고산고효재배괄의적시비수평,2008년재평과현진행대전시험연구불동시비수평대면경마령서생장화산량적영향.결과표명,재일정시비범위내,수착시비수평적제고,수연면경마령서적주고、경조、분지수、단주결서수,단주서중이급산량수지증가,단마령서농전순수익병몰유수착시비수평적제고이증가,단위비료마령서생산량수착시비수평적제고반이축점강저.기중N_(180)P_(180)K_(360)처리적농전순수익최고,단위비료생산량야교고.가견,재본시험조건하,매공경시N180 kg+P_2O_5180 kg+K_2O360 kg(즉복합비1200 kg+50%류산갑360 kg),시비교괄의엄서마령서면경고산고효재배적시비수평.
Tests on fertilization rate were made in winter potato fields under no-tiUage cultivation at Pingguo in 2008 to find the optimal fertilization rate for high yield and high benefit. Results showed that higher fertilization condition increased plant height, stem perimeter, ramification number, tuber set per plant, tuber yield per plant and yield of winter potato under no-tillage cultivation, but not increased benefit of winter potato, and reduced yield of unit fertilizer. N_(180)P_(180)K_(360) is the most profitable rate and it has higher effect of fertilizer on potato yield. Therefore,applying 1 200 kg fertilizer (15-15-15) and 360 kg potassium chloride (45%) per hectare is considered to be reasonable economic optimum application rate in Guangxi for no-tillage winter potato production.