秋播马铃薯烂种的气象条件分析

来源 :农业气象 | 被引量 : 0次 | 上传用户:myhululu
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
马铃薯在农业生产上占有重要的位置,但是,种性很易退化,严重影响产量。针对这个问题,农业科技工作者,经过多年的研究试验,创造了马铃薯秋播技术。但是,川东地区马铃薯秋播常受气象条件限制,造成烂种缺苗,影响秋播产量。为了探讨造成秋播马铃薯烂种的气象条件与防止措施,经过调查研究结果是:1.烂种的气象条件单要素的高温对马铃薯烂种无明显影响,但在播种后10天内日雨量大于25毫米、雨后三天内日最高气温大于30℃,再加土壤表土板结、透气性差的条件下,秋播马铃薯烂种缺苗就非常严重。
其他文献
We present the experimental results that demonstrate the enhancement of the short-circuit current of quantum well solar cells. The spectral response shows that
期刊
真人秀作为近年来各大卫视赚取收视率的主要节目之一,如今电视真人秀节目层出不穷,节目渐渐趋于同质化倾向,使得真人秀节目内容和模式相近。本文以24小时直播真人秀节目《完
Six kinds of Ni-Al alloy nanowires are optimized by means of simulated annealing. The optimized structures show that the Ni-Al alloy nanowires are helical shell
期刊
Within the framework of the low-energy effective theory arising from the instanton vacuum model of QCD, thelongitudinal virtual photon light-cone wavefunction,
期刊
To study chemical equilibrium of hadronic matter created in relativistic heavy ion collisions, phase shifts for the I = 2ππ elastic scattering and cross secti
期刊
Dual radio-frequency (rf) sources at widely different frequencies are often simultaneously used to separately optimize the plasma parameters and ion energy dist
期刊
A new prototype of single photon imaging system based on wedge and strip anodes is developed. The prototype can directly measure the intensity and position info
期刊
如何结合党的十七大精神,通过对积极推进征地程序改革,加强征地资金管理,完善征地补偿安置措施,来规范征地工作.确实保障建设项目依法合法用地,确实保护被征地农户的切身利益
Using the full-vector plane-wave expansion method, a kind of PMMA-based polarization-maintaining microstructured optical fibre (PM-mPOF) is theoretically studie
期刊
众所周知,8031单片机串行口在进行数字通讯时采用字同步规则,即用起始位“0”和停止位“1”实现同步。在采用这种规则时,若干扰出现在同步位,会造成字同步与帧同步失调,使整