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在冬小麦孕穗期,选择个体偏旺型、健壮型和瘦弱型三种类型苗情的田块,于抽穗、扬花和子粒形成期,用0.1——0.5ppm的三十烷醇及其同氮磷钾肥的适当配合进行叶面喷施2—3次,测定各处理对植株生理指标和经济性状的影响。试验结果表明,三十烷醇能明显地提高小麦根系活力、功能叶中硝酸还原酶活性及叶绿素含量、茎秆中可溶性糖含量和灌浆强度。因而能显著或极显著增加穗实粒数、千粒重和产量。三十烷醇与氮、磷、钾肥混施,应在苗情诊断的基础上选用不同的配方,选用得当,则其效果相得益彰;反之,混施比单施的穗实粒数、千粒重和产量反而下降。本试验还提供了不同苗情时,三十烷醇与常用氮、磷、钾肥混合的不同优化组合。
At the booting stage of winter wheat, three plots of seedlings of partial, vigorous and emaciated individuals were selected. During heading, flowering and seed formation, 0.1--0.5ppm triacontanol and its nitrogenous phosphate Potassium fertilizer with the appropriate foliar spraying 2-3 times to determine the impact of various treatments on plant physiological indicators and economic traits. The results showed that triacontanol significantly increased root activity, nitrate reductase activity and chlorophyll content in functional leaves, soluble sugar content and grouting strength in stems. Which can significantly or very significantly increase the number of spike grains, grain weight and yield. Triacontanol mixed with nitrogen, phosphorus and potassium fertilizer should be based on the diagnosis of seedling selection of different formulations, properly selected, the effect of each complement each other; the contrary, the mixed application than the single spike grain, grain weight and yield But declined. The experiment also provides different optimization combinations of triacontanol and common nitrogen, phosphorus and potassium fertilizer when different seedlings are mixed.