CAJ | 학술논문

研究了枣棉间作下棉花干物质积累与产量品质对不同施氮量的响应机制，确定枣棉间作的合理施氮量，为果棉间套作立体种植模式的合理氮肥运筹，提高棉花产量与品质提供理论依据。以在南疆的主栽棉花品种“中棉所49”为材料，研究了4个氮素水平（ N 0、150、450和750 kg/hm2）下棉花干物质的积累和产量的差异。结果表明，不同施氮量下棉花干物质累积存在显著差异，氮素缺乏或过量均影响其干物质在不同生育时期的累积量，使产量降低。施氮量对棉花品质也有显著影响，合理的氮肥用量不但能提高棉花单株结铃数和单铃重，从而提高产量，而且可使其有较好的整齐度，棉纤维长度，比强度和马克隆值。因此，在枣棉间作条件下，施氮量为N 450 kg/hm2时棉花的干物质积累量较高，增产效果显著，品质较好。
연구료조면간작하면화간물질적루여산량품질대불동시담량적향응궤제，학정조면간작적합리시담량，위과면간투작입체충식모식적합리담비운주，제고면화산량여품질제공이론의거。이재남강적주재면화품충“중면소49”위재료，연구료4개담소수평（ N 0、150、450화750 kg/hm2）하면화간물질적적루화산량적차이。결과표명，불동시담량하면화간물질루적존재현저차이，담소결핍혹과량균영향기간물질재불동생육시기적루적량，사산량강저。시담량대면화품질야유현저영향，합리적담비용량불단능제고면화단주결령수화단령중，종이제고산량，이차가사기유교호적정제도，면섬유장도，비강도화마극륭치。인차，재조면간작조건하，시담량위N 450 kg/hm2시면화적간물질적루량교고，증산효과현저，품질교호。
The aim of this study is to provide theory basis for making nitrogen management optimization and enhancing cotton yield and quality by investigating the effects of different nitrogen levels on cotton growth and determining appropriate N levels in jujube-cotton intercropping system .In this study , main cultivar CCRI 49 in the Southern Xingjian was selected as experimental material , and the difference of dry matter accumulation and yield of cotton was analyzed under treatments with 4 levels of nitrogen ( N 0、150、450 and 750 kg/ha ) .Results showed that there was a significant difference of cotton dry matter accumulation between different nitrogen treatments . Nitrogen deficiency or excessive application affected cotton dry matter accumulation and distribution , and had significant effect in different growth period , and led to yield reduction and decrease of cotton quality , suggesting that application of nitrogen significantly affect the yield and quality of cotton , and reasonable nitrogen fertilizer regulation not only can guarantee the increase of boll numbers and boll weight , but also improve the yield and ensure better uniformity , better cotton fiber length , specific strength and micronaire value .We conclude that application of nitrogen 450 kg/ha will obtain better dry matter accumulation of cotton under the jujube-cotton intercropping conditions , and improve cotton quality.