论文部分内容阅读
水分是制约旱地棉花产量提高的一个重要因素,对于十年九旱、条件有限的旱地来说,采用抗旱节水栽培技术是棉花产量提高的一个关键所在。近几年我们在实践中逐渐摸索出一套“以肥保水、以管调水、以锄保水、以化控省水、以整枝增密经济用水、以地膜覆盖蓄水”的旱地综合节水增产技术。 1、选用抗旱品种 选用适宜本地种植的、株型紧凑的中早熟品种,该品种蒸腾系数小,可减少水分的挥发量,起到抗旱节水的作用。该品种有中棉所12、16、17和豫棉4号等。 2、施肥增水 旱地棉花增施有机肥料,可有效地提高土壤肥力,增大土壤对水分的吸附量,起到以肥保水的作用。以农家肥作基肥,一般亩施2—3方,肥力差的棉田
Moisture is an important factor restricting the cotton yield in drylands. For dry land with limited dry conditions in ten years of drought and drought, the key to improving the yield of cotton is to adopt drought-resistant and water-saving cultivation techniques. In recent years, we gradually developed in practice in practice a series of “comprehensive water-saving in drylands with fertilizer and water, pipe water diversion, water diversion, water saving control, water conservancy by pruning, economic water-use pruning to cover water storage” Increase production technology. 1, the selection of drought-resistant varieties suitable for local planting, compact plant type of early maturing varieties of the transpiration coefficient is small, can reduce the amount of moisture evaporation, play a role in drought and water conservation. The varieties are in the cotton 12,16,17 and Henan cotton on the 4th and so on. 2, fertilization increased dryland Cotton increased organic fertilizer, can effectively improve soil fertility and increase the amount of soil moisture adsorption, play a role in water and fertilizer. Manchu fertilizer for basal, general Mushi 2-3 party, poor fertility cotton