氯化氯代胆碱提高黄土高原旱地小麦水肥效应机理的研究

通过模拟试验及＾１５Ｎ追踪技术，研究了ＣＣＣ浸种对黄土高的旱地小麦水肥效应影响的机理。结果表明：１％ＣＣＣ浸种可使土壤深层根的重量增加８６．４％，并可提高旱地小麦再生新的要力达２０％以上，对追施氮肥的利用能力较对照高２０％，产量提高了１６．４％。

Mechanism of Water and Fertilizer Effect Through Applying Cholrocholine Chl oriode (CCC) to Dryl and Winter Wheat in Loess Plateau Region

The effects of applying CCC solution to wheat seed soaking upon the water and fertilizer use efficiency of dryland winter wheat are analyzed based on the simulating experiment and the¹⁵N-trance technique.The results indicate that the application of 1 jo CCC solution to seed soaking can increase the weight of root in deep soil layer (below 70cm)by 86.4%.To add nitrogen fertilizer with the spring rain.seed soaking in CCC solution can increase the ability of wheat root regeneration and nitrogen utilization by 20%higher than that of the contrast, and it can increase wheat seed production by 16.4%.Thus, it is an effective measure to raise the water and fertilizer use efficiency on dryland winter wheat by the application of soaking seed in CCC solution in connection with nitrogen fertilizer application in spring rain.