Effect of Different Potassium Application Rate on Yield of Genghe-205
The effects of potassium application amount on yield traits and yield of Genghe-205 varieties were studied.The results showed that under treatment 4,when pure nitrogen(N)was 11 kg/667 m2,pure phosphorus(P)was 7 kg/667 m2 and pure potassium(K)was 7 kg/667 m2,the effective tiller rate of Genghe-205 was 23.7%,and the yield was 620 kg/667 m2,ranking first in this test site.Under the condition of the same amount of nitrogen fertilizer and phosphate fertilizer,the yield decreased with the increase of the amount of potassium fertilizer,indicating that only scientific and rational application of potassium fertilizer can obtain the effective character factors of yield and ideal yield.
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