【摘 要】
：
枯萎病是西瓜的一种毁灭性病害。该病一旦发生,即使马上采取化学防治措施,也难免造成损失,采用农业防治措施不失为一种投资少,效果好的防治方法。 所谓农业措施,除人们熟知
【机 构】
：
河北省武邑县职教中心,河北省武邑县职教中心 053400,053400
论文部分内容阅读
枯萎病是西瓜的一种毁灭性病害。该病一旦发生,即使马上采取化学防治措施,也难免造成损失,采用农业防治措施不失为一种投资少,效果好的防治方法。 所谓农业措施,除人们熟知的采用抗病品种和轮作倒茬外,还包括以下几项内容。
Fusarium wilt is a devastating disease of watermelon. Once the disease occurs, even if chemical control measures are taken immediately, it will inevitably cause losses. Using agricultural prevention and control measures is a less-cost-effective and effective prevention and control method. The so-called agricultural measures, in addition to the well-known use of resistant varieties and crop rotation, but also includes the following.
其他文献
1943年,我出生在山东栖霞一个贫穷的农民家庭。父亲早亡,母亲日夜操劳,拉扯着几个孩子艰难度日,真是衣不遮体,食不裹腹,亲戚朋友的无私帮助,才使我有幸活了下来。兄弟姐妹数
以远见和信誉取胜的企业,才是真正的大企业。德胜置业大厦必将牵手更多与其志同道合的品牌企业,将德胜门区域打造成为最具中国传统魅力的热点区域。
A company that wins wi
Mg(OH)2 was prepared using boron mud as raw material by ammonia recirculation method[1].The technological process is that the boron mud was calcined at 750
Arsenic contamination of water and associated health risks have been reported in many parts of China.Leaching of arsenic from industrial wastewater into gro
The mother-liquor after precipitating cobalt by the oxalic acid contains the oxalic acid of 0.20~0.25mol/L, and the hydrochloric acid of 1mol/L.If it was us
二十世纪六七十年代,毛主席发出了“三线建设要抓紧”的伟大号召。一批又一批稚气未脱的中学生,满怀激情地开赴到了“三线”建设的工地。他们是特殊的学生,三年中全部是军事
The absorption of sulfur dioxide in simulating flue gas by using the module of liquid-containing membrane which is made up of hollow fiber and citric acid-s
Sulfuric acid was used to decompose low-grade ascharite.After filtering the acidolysis solution, residue and the leaching solution were obtained.Boric acid
(一)播前准备 育苗盘可因陋就简,木箱、纸箱、旧盆等均可。苗盘高15厘米左右。育苗基质以炉灰渣为主,掺拌1/3的腐熟马粪或锯末。炉渣要用筛子筛除土块和细面,以绿豆粒大小为
Phosphine(PH3) is a kind of impurity in yellow phosphoric tail gas.PH3 could make catalysts toxic and impede recycling of yellow phosphoric tail gas.Purifyi