Method for constructing cotton population structure of jujube and cotton intercropping drip irrigation cotton field in Xinjiang

Abstract

The invention relates to a method for constructing a high-yielding cotton population structure of a jujube and cotton intercropping drip irrigation cotton field in Xinjiang. The method includes steps of creating a suitable population environment in the drip irrigation high-yielding cotton field; preparing seeds; sowing the seeds; irrigating; applying fertilizers; chemically regulating the cotton field; controlling diseases, insects and weeds; performing topping; and harvesting and the like. The method has the advantages that the high-yielding cotton population structure of the jujube and cotton intercropping drip irrigation cotton field in Xinjiang can be constructed; and as shown by investigation for a plurality of fields, specific indexes of the high-yielding population structure include that the maturity of selected cotton varieties is 5-8 days earlier than the maturity of local mono-cropping main cotton varieties, the period between a sowing stage and a boll opening stage is 148-156 days, cotton reaches the boll opening stage on 12-20 September under a jujube and cotton intercropping condition, the cotton assuredly reaches the boll opening stage on 12-20 September under the jujube and cotton intercropping condition, the maximum leaf area index is 3.9-4.3, the plant height is 69-77cm, the plant width is 51-58cm, the light interception rate of the cotton at a peak polling stage is higher than 80%, the fruit branch number is 8.6-9.2, the number of unit-plant bolls is 3.9-4.3 per plant, the actual number of harvesting plants is 15380-17450 per mu (net area), and the boll yield is 61581-71337 per mu.

Description

technical field

[0001] The invention relates to a method for constructing a cotton high-yield population structure in a jujube-cotton intercropping drip irrigation cotton field in Xinjiang. Background technique

[0002] Jujube-cotton intercropping is a typical three-dimensional planting mode. This mode is to intercrop cotton in the jujube field, especially before the jujube tree full fruit period or in the jujube field with a large row spacing. This mode fully considers the jujube tree itself. The branches are sparse, the leaves are small, and the main root is developed. It is a deep-rooted economic tree species. The lateral roots and fibrous roots are mostly distributed in the 20-80cm soil layer underground, so they can absorb water and nutrients in the deep soil, and provide sufficient ground and underground for intercropping crops. room to grow. Therefore, this model can not only make full use of natural resources such as land, sunlight, water, and temperature, but also ...