论文部分内容阅读
2012年新疆农一师13团所在地区大面积种植的细绒棉抗虫品种K7不仅对棉铃虫具有高抗性,而且在生产实践中表现出了很高的丰产性和高产性。近年来,棉花进入中后期,特别是进入七八月份,由于气温高,水资源的短缺,旱情明显加重,导致红蜘蛛、棉蚜、第3代棉铃虫的危害加大,同时由于水肥的管理的不当,致使棉花产量的下降,品级降低,这些都制约了K7的单产水平。对于受旱棉田K7的中后期管理,强化水肥运筹和“三虫”防治将是中后期管理的关键。为充分发挥K7棉花丰产高产的特性,基于此,针对K7品种棉花受旱后的中后期管理做了相关的探讨。
In 2012, the K7 cotton bollworm cultivated in large area in the 13th regiment of Nongyishi division of Xinjiang was not only highly resistant to cotton bollworm, but also showed high yield and high yield in the production practice. In recent years, cotton entered the late period, especially into July and August, due to high temperatures, water shortages, drought significantly increased, leading to red spider, cotton aphid, the third generation of bollworm greater harm, and because of the management of water and fertilizer Of the improper, resulting in decreased cotton production, lower grade, which have restricted the yield of K7 level. For the mid-and late-stage management of drought-tolerant cotton fields K7, strengthening the management of water and fertilizer as well as the prevention and control of “three insects” will be the key to the mid- and late-stage management. In order to give full play to the characteristics of high-yield and high-yielding cotton K7, based on this, for the K7 cotton varieties drought after the mid-late management related discussions.