Effects of Water and Nitrogen on Yield in Different Cotton Varietiesunder Drip Irrigation

The field experiment was conducted to research effects and differences of different water and nitrogen on cotton yield in two cotton varieties.The results show that the yields of two cotton varieties were increased significantly with adding of water and nitrogen,reduced with excessive irrigation water,the maximum cotton yield was treatment N2W2(N2:360 kg/hm2;W2:4 500 m3/hm2).The cotton yield of BiaoZa A1 is higher than XinLuZao33,there was no significant difference in treatment N1W1 and N1W3,others treatments were significant difference in cotton yield.These results suggested that yield and water use efficiency can enhanced evidently by fitting measure of water and fertilize based on different cotton varieties.