小麦叶片、穗、芒对粒重的作用及品种间效应的研究

本文试验研究了剪叶、剪芒、套穗处理对粒重的影响，并探讨了小麦生育后期旗叶干尖、中部叶片旱枯、干芒及落黄等性状对粒重的影晌。结果表明，对粒重的作用：穗部＞旗叶＞倒二叶＞芒＞倒三叶，而且品种间存在显著差异。

Efficacy of Acaricides alone and in Combination with Propiconozole against Rice Panicle/Sheath Mite, Steneotarsonemus spinki

Experiments were conducted for chemical management against panicle mite, Steneotarsonemus spinki using seven treatments. Based on the overall performance of chemicals against this pest, spiromesifen ~ propiconazole, diafenthuron ＋ propiconazole and fenpyroxymate alone were found effective against panicle mite and associated grain discolouration. Spiromesifen （1 mL） ＋ propiconazole （l mL） per litre of water was the best treatment which recorded 24.77% increase in grain yield over control.