Is New Zealand flax easy to grow?

Planting flax in New Zealand needs good maintenance, and whether greenhouse is needed depends on the local climate and environment.

1, land selection and stubble selection

New Zealand flax has weak root system development, poor absorption fertility, slow seedling growth and is vulnerable to weeds. Therefore, planting flax in New Zealand should choose plots with deep soil layer, loose soil, water and fertilizer conservation, good exhaust, flat terrain and few weeds. Flax is suitable for neutral and slightly acidic soils, and the goal of high yield can be achieved under the conditions of pH 6.5-7.5 and soil organic matter content of 27-53 mg/kg.

2. Farming and land preparation

Lanxi county belongs to the continental monsoon climate of cold temperate zone, with ten years and nine droughts in spring and windy weather. Flax seeds are small and covered with shallow soil, so more water is needed for seed germination. Therefore, improving sowing quality and maintaining soil moisture are the keys to the survival of flax seedlings after one sowing. The original ridge harrow stubble is the main land preparation method adopted in our county, and its practice is: harrow and harrow, and harrow and press continuously. Raking soil preparation can not only create a flat and loose surface soil, but also reduce a large amount of water loss in the surface soil below 10cm, which has obvious moisture conservation effect.

Step 3 apply fertilizer

Rational application of chemical fertilizer and proper application of chemical fertilizer at the same time as organic fertilizer have good yield-increasing effects. Fertilizer can be applied to the soil by machine before or during sowing. The application amount should be determined according to soil type, fertility, pH, soil quality, planting density and yield index. The ratio of N, P and K in light alkaline soil type is1:31,and that in black soil type is 2: 1: 1. Adding trace fertilizers such as zinc fertilizer and copper fertilizer in places where conditions permit also has obvious yield-increasing effects.

Step 4: Sowing.

(1) seed selection: excellent varieties are the internal cause of high yield of flax. Black Duck 10 and Ya Shuang No.7 were selected in our county. (2) Seed treatment: Before sowing, carefully select seeds and thoroughly remove impurities such as dodder, grass seeds, flax, shriveled seeds, soil particles, etc., so that the purity of seeds can reach above ~ U95% and the germination rate can reach above 90%. In order to control flax seedling diseases, seed treatment must be carried out before sowing. Sun the seeds for 4-5 days before sowing. Seed dressing with anthracnose thiram was used for prevention and control, and the dosage was 0.3% of the seed amount. (3) Determination of sowing date and sowing amount: When the soil temperature at the sowing depth is stable at 7-7.5℃ and the soil water content is not lower than 20%, our county usually carries out sowing from the end of April to the beginning of May. Sowing amount depends on soil fertility and number of seedlings. For plots with high soil fertility, the number of seedlings per hectare is1500-180,000, and the sowing amount is105-12.5 kg/hm ㎡. For the plot with general fertility, the seedling per hectare1350-150,000 plants, and the sowing amount is 97.5- 105 kg/hm ㎡. In the plot with poor fertility, there are 0/200-13.5 million plants per hectare, and the sowing amount is 90-97.5 kg/hm ~ 2.