【摘 要】
:
无论板田直播油菜还是板田移栽油菜,都是地板,通透性差,草大,地湿,缺肥,易遭冻害,这些都严重影响油菜发根发棵,正常生长发育和增产增收。为了减轻上述不利因素为害,板田油菜
【机 构】
:
湖北孝感师专,湖北孝感师专 432100,432100
论文部分内容阅读
无论板田直播油菜还是板田移栽油菜,都是地板,通透性差,草大,地湿,缺肥,易遭冻害,这些都严重影响油菜发根发棵,正常生长发育和增产增收。为了减轻上述不利因素为害,板田油菜要作到如下“四防”。一、防杂草:“板田不除草,草把苗淹了。”晚稻茬板田油菜,由于土地末
Regardless of Banda broadcast rape or transplanting rape fields, are the floor, poor permeability, grass, wet, lack of fat, vulnerable to frost damage, which have a serious impact rapeseed hair trees, normal growth and development and increase production. In order to alleviate the adverse factors of damage, Itabata rape to make the following “four defenses.” First, weed control: “Ban Tian does not weeding, grass seedlings flooded.” Late rice stubble field plate rape, because the end of the land
其他文献
The model of stochastic perturbation is built up systematically in quasi-ideal dispersion-managed soliton system,its influence on soliton propagation is investi
由于越来越快的人口增长和耕地减少,粮食安全问题日益严重,通过科学的手段解决粮食供应问题亦愈加令人重视。水稻上通过现代分子育种技术,选育产量高、米质优、抗性强的品种,是众多水稻育种科学工作者共同奋斗的目标。染色体片段置换系作为一种永久的次级作图群体,虽然构建的时间花费长,但是对每一个家系而言其遗传背景纯和,插入片段数目少,不仅利于QTL的定位,更利于在分子设计育种中作为基因库将优良基因进行保存,再通
李奇,2007年的全国种粮大户,2008年的河南种粮标兵.2008年12月14日,他受邀在中央电视台二套“对话”栏目与河南省委书记徐光春一起出席专题节目.2009年2月7日,李奇受到了温家
Electron scattering from molecules in the intermediate- and high-energy range is investigated employing the devel-oped semi-empirical formula for electron scatt
The population transfer in effective three-state systems driven by laser beams has been studied based on the theory of Lewis-Riesenfeld Hermitian invariants in
In light of the interference experiment of Bose-Einstein condensates, we present an anharmonic exteal potential model to study ground state properties of Bose-E
近年来,随着公民体检意识增强以及B超等辅助检查技术的提高和普及,甲状腺结节的发现率普遍上升。其中,5%~15%的甲状腺结节为恶性[1]。手术治疗是甲状腺癌主要的治疗方法,切除
地黄(Rehmanniaglutinosalibosch)为玄参科地黄属植物,以块根入药,早在一千多年前就开始了引种驯化,是少数几种以选育品种为种源进行栽培的药用植物,目前大面积种植的品种只有通过
In this paper, we present a scheme to prepare a set of the multi-atom entangled states by the cavity quantum electrodynamics (QED) technology. The multi-atom en
人们习惯于称采访是调查研究,这从广义上讲是对的,但确切地说,这种提法尚嫌笼统。为了说明这个问题,下面我试举一例:1978年,石油部一个小轿车司机李本东,把一个从东北来京的