玉米（Zea mays L.）是重要的粮食、饲料和工业原料作物，近年来其种植面积和总产量已成为我国第一大作物。玉米瘤黑粉病是一种世界性病害，广泛分布在各玉米栽培地区，常为害玉米叶、
The recording density of multilevel photochromic memory is limited by the signal-to-noise ratio (SNR) of the readout signal. In this paper, shot noise and mater
Spiral waves have been controlled by generating target waves with a localized inhomogeneity in the oscillatory medium. The competition between the spiral waves
By use of an auxiliary equation and through a function transformation, the Jacobi elliptic function wave-like solutions, the degenerated soliton-like solutions
With a coupling laser locked to caesium 6S1/2 Fg=4-6P3/2Fe=5 cycling transition and a co-propagating probe laser scanned across 6S1/2Fg=4-6P3/2Fe=3, 4 and 5 tra
近年来,随着马铃薯产业的快速发展,宁夏南部山区常年大面积种植,改变了马铃薯原有的生产布局,致使轮作倒茬困难,连作障碍问题日益突出,造成马铃薯地上部和地下部生长发育减弱、土壤养分含量下降,微生态环境改变等状况,研究通过两年田间定位试验和室内分析实验,结合磷脂脂肪酸(PLFA)、Biolog Eco板等技术手段,以单作马铃薯、蚕豆、荞麦,马铃薯//蚕豆、马铃薯//荞麦为处理,研究了马铃薯不同间作模式对
By taking full account of the non-orthogonality of the orbitals between the low-lying doubly excited states 1po and the singly excited states 1Se and 1 De of He
Phase synchronization of chaotic systems induced by periodic signals is studied experimentally and numerically.Three kinds of periodic signals are chosen to dri
In this paper, the discrete mKdV lattice is solved by using the modified Jacobian elliptic function expansion method. As a consequence, abundant families of Jac
为了明确小麦籽粒不同部位品质性状的分布特征,探讨氮肥运筹对籽粒各层品质性状的影响,于2009-2011年在江苏省徐州农科院进行试验,叶面喷氮试验选用四个中强筋小麦品种：矮抗58、09-82、济麦22和徐麦30；不同叶龄期追氮试验选用强筋小麦品种徐麦7086,研究了花后叶面喷施氮肥和不同叶龄期追施氮肥(春2叶、春4叶、春5叶、孕穗期和开花期)对小麦籽粒品质性状空间分布特征的影响。主要研究结果如下：1