Suitable machine picking group construction method of dripping irrigation cotton fields in Tarim Basin of South Xinjiang

Abstract

The invention provides a suitable machine picking group construction method of dripping irrigation cotton fields in Tarim Basin of South Xinjiang. The method comprises the steps of variety selection, plant row spacing and density configuration, irrigation and fertilizer application of cotton fields with different growing conditions, mepiquat chloride using method formulation and the like. A cotton variety constructed by a machine picking dripping irrigation cotton field group is put forward. The growth period is 131-136 days. The group has a rapid sensitivity to a defoliant; particularly, several days after spraying the defoliant, the leaf defoliation rate of the cotton field group is up to 91.2-94.5 %; the leaf inclination angle in the variety setting period is 46.5-65.1 degrees; the internode distance of fruit branches is 7-12 cm; the leaf size is medium and small; bracts are small; cotton leaves are good, and fluffs on the back of the cotton leaves are few; the ground clearance of cotton bolls at the lowermost portion of cotton plants is 18.0-22.0 cm; the covering of mulching films, and the planting mode of wide and narrow row or equal row spacing are used while planting. According to the method, not only are the leaf defoliation rate of the cotton leaves, the picking net rate of the machine picking, the fiber length of processed ginned cotton, the fiber strength of the processed ginned cotton and the picking efficiency increased, but also the loss rate of the machine picking and the impurity rate of seed cottons are reduced, and the production requirements are completely met.

Description

technical field [0001] The invention relates to a method for constructing a suitable machine-harvested colony for drip irrigation cotton fields in the Tarim Basin of southern Xinjiang. Background technique [0002] Tarim Basin in southern Xinjiang (Uyghur: ) stretches from the eastern foot of the Pamirs in the west to the Lop Nur depression in the east, to the southern foot of the Tianshan Mountains in the north, and to the northern foot of the Kunlun Mountains in the south, roughly within the range of 37°-42° north latitude. The largest inland basin. The basin is located in a warm temperate zone with four distinct seasons, characterized by hot summer and little rain, windy spring and cold winter. Strong solar radiation all year round, sufficient sunshine, long sunshine hours, and large temperature difference between day and night are conducive to the accumulation of photosynthetic nutrients in cotton. The oasis area in the basin has a large proportion of cotton fields wi...

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Problems solved by technology

The survey also shows that: in normal production, cotton fields with normal growth have better suitability for machine harvesting, but for cotton fields with weak growth and vigorous growth, if no corresponding targeted measures are taken, machine harvesting often occurs due to serious unreasonable population structure. Substantial decline in mining quality