How to select suitable cotton varieties? Here world clothing shoes The Xiaobian of the hat net is introduced to you.

When selecting cotton varieties, cotton growers should scientifically select varieties and specific varieties of the road according to the principle of "obeying overall situation, giving priority to efficiency, solving outstanding problems and meeting production conditions". The following 7 situations can be considered:

First, when the relevant departments or cotton leading enterprises are of special quality. cotton When establishing a production base, such as colored cotton and high quality cotton, and organizing the regional and large-scale contract production, the special species designated by the organizational unit should be selected, and the contract should be conscientiously fulfilled, and the cotton varieties should be planted and sold in full to the designated purchasing units on time. The organization must first conduct adaptive tests on the selected varieties in the local area, proving that the variety is completely suitable for the local climatic conditions and production conditions, and ensures that the farmers in the contract have better income than other varieties. In this case, cotton seeds are generally supplied by tissue units for reproduction (or procurement).

The two is to arrange pure spring cotton planting or spring planting in the cotton fields with better fertilizer and water conditions. When the seedlings are transplanted or covered with plastic mulch, it is better to choose the insect resistant hybrid cotton varieties with large production capacity, such as Lu Miyan 15, Lu Mian No. 20, GKz26 and GKz29.

The three is that although the fertilizer and water conditions in the cotton field are better, there is no seedling transplant habit or precision sowing condition covered with plastic film. When using more varieties and inconvenient selection of hybrid cotton varieties, we should select medium and early maturing insect resistant cotton varieties with good germination characteristics, strong growth potential, high plant size, loose plant type and late premature decay, such as Lu Miyan 16, Lu Mian 21, Lu Mian 22, DP99B and so on.

Four, in the old cotton fields with high incidence of Verticillium Wilt and continuous cropping for many years, cotton varieties with strong resistance to Verticillium wilt should be selected first, such as Lu Miyan 18, Lu Mian 22, China cotton mill 45 and DP99B.

The five is cotton fields with pure plastic film mulching, or sandy soil with strong soil quality and easy to decay early. It is best to choose medium maturity or early maturity insect resistant cotton varieties with a longer growth period, stronger resistance to Verticillium wilt, late leaf function and premature decay, such as Lu Miyan 18, Lu Mian No. 22, DP99B and DP33B.

Six, in areas where more people and less cotton are used for cultivation, it is best to use medium and early maturing insect resistant cotton varieties with vegetative shoots and weak buds, compact plant type and medium leaf size, such as Lu Miyan 16, Lu Mian 17, Lu Mian 22, China cotton mill 41 and Xin cotton 33B.

The seven is to interplant cotton in the wheat field with narrow intercropping. We should choose the short season cotton varieties within 110 days of growth period, the coastal saline alkali cotton fields that fail to press the soil and the cotton fields that can not be planted before the rain. When we catch rain to catch cotton after May 8th, we must choose the special early maturing within 115 days. Varieties 。